diff --git a/backend/package-lock.json b/backend/package-lock.json
index d5c083d..e6ea34c 100644
--- a/backend/package-lock.json
+++ b/backend/package-lock.json
@@ -15,12 +15,27 @@
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-      "integrity": "sha1-63d99gEXI6OxTopywIBcjoZ0a9I=",
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-        "negotiator": "0.6.1"
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+          "resolved": "https://registry.npmjs.org/mime-types/-/mime-types-2.1.35.tgz",
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@@ -44,10 +59,24 @@
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+      "resolved": "https://registry.npmjs.org/aproba/-/aproba-1.2.0.tgz",
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+      "resolved": "https://registry.npmjs.org/are-we-there-yet/-/are-we-there-yet-1.1.7.tgz",
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+        "readable-stream": "^2.0.6"
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-      "integrity": "sha1-ml9pkFGx5wczKPKgCJaLZOopVdI="
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@@ -107,6 +136,15 @@
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+      "version": "1.0.3",
+      "resolved": "https://registry.npmjs.org/bcrypt/-/bcrypt-1.0.3.tgz",
+      "integrity": "sha512-pRyDdo73C8Nim3jwFJ7DWe3TZCgwDfWZ6nHS5LSdU77kWbj1frruvdndP02AOavtD4y8v6Fp2dolbHgp4SDrfg==",
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@@ -123,6 +161,14 @@
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+      "resolved": "https://registry.npmjs.org/block-stream/-/block-stream-0.0.9.tgz",
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@@ -162,6 +208,11 @@
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+      "resolved": "https://registry.npmjs.org/buffer-equal-constant-time/-/buffer-equal-constant-time-1.0.1.tgz",
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@@ -246,10 +297,25 @@
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+      "resolved": "https://registry.npmjs.org/console-control-strings/-/console-control-strings-1.1.0.tgz",
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-      "resolved": "https://registry.npmjs.org/content-disposition/-/content-disposition-0.5.2.tgz",
-      "integrity": "sha1-DPaLud318r55YcOoUXjLhdunjLQ="
+      "version": "0.5.4",
+      "resolved": "https://registry.npmjs.org/content-disposition/-/content-disposition-0.5.4.tgz",
+      "integrity": "sha512-FveZTNuGw04cxlAiWbzi6zTAL/lhehaWbTtgluJh4/E95DqMwTmha3KZN1aAWA8cFIhHzMZUvLevkw5Rqk+tSQ==",
+      "requires": {
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+          "resolved": "https://registry.npmjs.org/safe-buffer/-/safe-buffer-5.2.1.tgz",
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+        }
+      }
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@@ -257,14 +323,14 @@
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-      "resolved": "https://registry.npmjs.org/cookie/-/cookie-0.3.1.tgz",
-      "integrity": "sha1-5+Ch+e9DtMi6klxcWpboBtFoc7s="
+      "version": "0.4.2",
+      "resolved": "https://registry.npmjs.org/cookie/-/cookie-0.4.2.tgz",
+      "integrity": "sha512-aSWTXFzaKWkvHO1Ny/s+ePFpvKsPnjc551iI41v3ny/ow6tBG5Vd+FuqGNhh1LxOmVzOlGUriIlOaokOvhaStA=="
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-      "integrity": "sha1-4wOogrNCzD7oylE6eZmXNNqzriw="
+      "integrity": "sha512-QADzlaHc8icV8I7vbaJXJwod9HWYp8uCqf1xa4OfNu1T7JVxQIrUgOWtHdNDtPiywmFbiS12VjotIXLrKM3orQ=="
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@@ -317,11 +383,21 @@
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       "integrity": "sha1-9lNNFRSCabIDUue+4m9QH5oZEpA="
     },
+    "deep-extend": {
+      "version": "0.6.0",
+      "resolved": "https://registry.npmjs.org/deep-extend/-/deep-extend-0.6.0.tgz",
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       "integrity": "sha1-3zrhmayt+31ECqrgsp4icrJOxhk="
     },
+    "delegates": {
+      "version": "1.0.0",
+      "resolved": "https://registry.npmjs.org/delegates/-/delegates-1.0.0.tgz",
+      "integrity": "sha512-bd2L678uiWATM6m5Z1VzNCErI3jiGzt6HGY8OVICs40JQq/HALfbyNJmp0UDakEY4pMMaN0Ly5om/B1VI/+xfQ=="
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@@ -330,7 +406,7 @@
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-      "integrity": "sha1-l4hXRCxEdJ5CBmE+N5RiBYJqvYA="
+      "integrity": "sha512-3NdhDuEXnfun/z7x9GOElY49LoqVHoGScmOKwmxhsS8N5Y+Z8KyPPDnaSzqWgYt/ji4mqwfTS34Htrk0zPIXVg=="
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@@ -346,6 +422,14 @@
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       }
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+      "version": "1.0.11",
+      "resolved": "https://registry.npmjs.org/ecdsa-sig-formatter/-/ecdsa-sig-formatter-1.0.11.tgz",
+      "integrity": "sha512-nagl3RYrbNv6kQkeJIpt6NJZy8twLB/2vtz6yN9Z4vRKHN4/QZJIEbqohALSgwKdnksuY3k5Addp5lg8sVoVcQ==",
+      "requires": {
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       "resolved": "https://registry.npmjs.org/editorconfig/-/editorconfig-0.15.3.tgz",
@@ -365,7 +449,7 @@
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-      "integrity": "sha1-rT/0yG7C0CkyL1oCw6mmBslbP1k="
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@@ -418,12 +502,12 @@
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-      "integrity": "sha1-Aljq5NPQwJdN4cFpGI7wBR0dGYg="
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-      "integrity": "sha1-Qa4u62XvpiJorr/qg6x9eSmbCIc="
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@@ -449,57 +533,140 @@
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-        "content-disposition": "0.5.2",
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         "encodeurl": "~1.0.2",
         "escape-html": "~1.0.3",
         "etag": "~1.8.1",
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         "on-finished": "~2.3.0",
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@@ -1277,6 +1629,38 @@
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@@ -1362,12 +1754,46 @@
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-        "mime": "1.4.1",
-        "ms": "2.0.0",
+        "http-errors": "1.8.1",
+        "mime": "1.6.0",
+        "ms": "2.1.3",
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-        "range-parser": "~1.2.0",
-        "statuses": "~1.4.0"
+        "range-parser": "~1.2.1",
+        "statuses": "~1.5.0"
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+            "inherits": "2.0.4",
+            "setprototypeof": "1.2.0",
+            "statuses": ">= 1.5.0 < 2",
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+          "resolved": "https://registry.npmjs.org/inherits/-/inherits-2.0.4.tgz",
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+          "resolved": "https://registry.npmjs.org/statuses/-/statuses-1.5.0.tgz",
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@@ -1431,14 +1857,14 @@
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+      "version": "1.14.2",
+      "resolved": "https://registry.npmjs.org/serve-static/-/serve-static-1.14.2.tgz",
+      "integrity": "sha512-+TMNA9AFxUEGuC0z2mevogSnn9MXKb4fa7ngeRMJaaGv8vTwnIEkKi+QGvPt33HSnf8pRS+WGM0EbMtCJLKMBQ==",
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         "escape-html": "~1.0.3",
-        "parseurl": "~1.3.2",
-        "send": "0.16.2"
+        "parseurl": "~1.3.3",
+        "send": "0.17.2"
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@@ -1517,6 +1943,14 @@
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       }
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+    "string_decoder": {
+      "version": "1.1.1",
+      "resolved": "https://registry.npmjs.org/string_decoder/-/string_decoder-1.1.1.tgz",
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+      "requires": {
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       "resolved": "https://registry.npmjs.org/strip-ansi/-/strip-ansi-4.0.0.tgz",
@@ -1537,6 +1971,36 @@
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       "integrity": "sha1-u0P/VZim6wXYm1n80SnJgzE2Br8="
     },
+    "strip-json-comments": {
+      "version": "2.0.1",
+      "resolved": "https://registry.npmjs.org/strip-json-comments/-/strip-json-comments-2.0.1.tgz",
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+    },
+    "tar": {
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+      "resolved": "https://registry.npmjs.org/tar/-/tar-2.2.2.tgz",
+      "integrity": "sha512-FCEhQ/4rE1zYv9rYXJw/msRqsnmlje5jHP6huWeBZ704jUTy02c5AZyWujpMR1ax6mVw9NyJMfuK2CMDWVIfgA==",
+      "requires": {
+        "block-stream": "*",
+        "fstream": "^1.0.12",
+        "inherits": "2"
+      }
+    },
+    "tar-pack": {
+      "version": "3.4.1",
+      "resolved": "https://registry.npmjs.org/tar-pack/-/tar-pack-3.4.1.tgz",
+      "integrity": "sha512-PPRybI9+jM5tjtCbN2cxmmRU7YmqT3Zv/UDy48tAh2XRkLa9bAORtSWLkVc13+GJF+cdTh1yEnHEk3cpTaL5Kg==",
+      "requires": {
+        "debug": "^2.2.0",
+        "fstream": "^1.0.10",
+        "fstream-ignore": "^1.0.5",
+        "once": "^1.3.3",
+        "readable-stream": "^2.1.4",
+        "rimraf": "^2.5.1",
+        "tar": "^2.2.1",
+        "uid-number": "^0.0.6"
+      }
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     "through": {
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       "resolved": "https://registry.npmjs.org/through/-/through-2.3.8.tgz",
@@ -1551,6 +2015,19 @@
         "next-tick": "1"
       }
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+    "toidentifier": {
+      "version": "1.0.1",
+      "resolved": "https://registry.npmjs.org/toidentifier/-/toidentifier-1.0.1.tgz",
+      "integrity": "sha512-o5sSPKEkg/DIQNmH43V0/uerLrpzVedkUh8tGNvaeXpfpuwjKenlSox/2O/BTlZUtEe+JG7s5YhEz608PlAHRA=="
+    },
+    "topo": {
+      "version": "1.1.0",
+      "resolved": "https://registry.npmjs.org/topo/-/topo-1.1.0.tgz",
+      "integrity": "sha512-vpmONxdZoD0R3hzH0lovwv8QmsqZmGCDE1wXW9YGD/reiDOAbPKEgRDlBCAt8u8nJhav/s/I+r+1gvdpA11x7Q==",
+      "requires": {
+        "hoek": "2.x.x"
+      }
+    },
     "toposort-class": {
       "version": "1.0.1",
       "resolved": "https://registry.npmjs.org/toposort-class/-/toposort-class-1.0.1.tgz",
@@ -1594,6 +2071,11 @@
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       }
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+    "uid-number": {
+      "version": "0.0.6",
+      "resolved": "https://registry.npmjs.org/uid-number/-/uid-number-0.0.6.tgz",
+      "integrity": "sha512-c461FXIljswCuscZn67xq9PpszkPT6RjheWFQTgCyabJrTUozElanb0YEqv2UGgk247YpcJkFBuSGNvBlpXM9w=="
+    },
     "umzug": {
       "version": "2.2.0",
       "resolved": "https://registry.npmjs.org/umzug/-/umzug-2.2.0.tgz",
@@ -1603,6 +2085,11 @@
         "bluebird": "^3.5.3"
       }
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+    "underscore": {
+      "version": "1.13.6",
+      "resolved": "https://registry.npmjs.org/underscore/-/underscore-1.13.6.tgz",
+      "integrity": "sha512-+A5Sja4HP1M08MaXya7p5LvjuM7K6q/2EaC0+iovj/wOcMsTzMvDFbasi/oSapiwOlt252IqsKqPjCl7huKS0A=="
+    },
     "universalify": {
       "version": "0.1.2",
       "resolved": "https://registry.npmjs.org/universalify/-/universalify-0.1.2.tgz",
@@ -1621,10 +2108,15 @@
         "punycode": "^2.1.0"
       }
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+    "util-deprecate": {
+      "version": "1.0.2",
+      "resolved": "https://registry.npmjs.org/util-deprecate/-/util-deprecate-1.0.2.tgz",
+      "integrity": "sha512-EPD5q1uXyFxJpCrLnCc1nHnq3gOa6DZBocAIiI2TaSCA7VCJ1UJDMagCzIkXNsUYfD1daK//LTEQ8xiIbrHtcw=="
+    },
     "utils-merge": {
       "version": "1.0.1",
       "resolved": "https://registry.npmjs.org/utils-merge/-/utils-merge-1.0.1.tgz",
-      "integrity": "sha1-n5VxD1CiZ5R7LMwSR0HBAoQn5xM="
+      "integrity": "sha512-pMZTvIkT1d+TFGvDOqodOclx0QWkkgi6Tdoa8gC8ffGAAqz9pzPTZWAybbsHHoED/ztMtkv/VoYTYyShUn81hA=="
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@@ -1644,7 +2136,7 @@
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       "resolved": "https://registry.npmjs.org/vary/-/vary-1.1.2.tgz",
-      "integrity": "sha1-IpnwLG3tMNSllhsLn3RSShj2NPw="
+      "integrity": "sha512-BNGbWLfd0eUPabhkXUVm0j8uuvREyTh5ovRa/dyow/BqAbZJyC+5fU+IzQOzmAKzYqYRAISoRhdQr3eIZ/PXqg=="
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@@ -1669,6 +2161,14 @@
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       "integrity": "sha1-2e8H3Od7mQK4o6j6SzHD4/fm6Ho="
     },
+    "wide-align": {
+      "version": "1.1.5",
+      "resolved": "https://registry.npmjs.org/wide-align/-/wide-align-1.1.5.tgz",
+      "integrity": "sha512-eDMORYaPNZ4sQIuuYPDHdQvf4gyCF9rEEV/yPxGfwPkRodwEgiMUUXTx/dex+Me0wxx53S+NgUHaP7y3MGlDmg==",
+      "requires": {
+        "string-width": "^1.0.2 || 2 || 3 || 4"
+      }
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     "wkx": {
       "version": "0.4.6",
       "resolved": "https://registry.npmjs.org/wkx/-/wkx-0.4.6.tgz",
diff --git a/backend/package.json b/backend/package.json
index fdff49c..f1f19bb 100644
--- a/backend/package.json
+++ b/backend/package.json
@@ -12,7 +12,7 @@
   "dependencies": {
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     "body-parser": "^1.18.3",
-    "express": "^4.16.4",
+    "express": "^4.17.3",
     "jsonpack": "^1.1.5",
     "jsonwebtoken": "^7.4.1",
     "lodash": "^4.17.11",