v19.08.00

[Feature:Logging] Preferred name logging sysadmin script (#16)

* Create preferred_name_logging.php

Sysadmin tool portion as part of the logging request under submitty/submitty#3273 ("Preferred name is forgotten/removed without any indication why")

Initial code entry.  Testing and tweaking needed.  WIP.

* Update preferred_name_logging.php

Psql can generate several logfiles that need to be parsed.

* Update preferred_name_logging.php

WIP

* Update preferred_name_logging.php

WIP

* Update preferred_name_logging.php

WIP

* Update preferred_name_logging.php

WIP

* Update preferred_name_logging.php

PR Candidate

* Delete preferred_name_logging.php~

Unneeded temp file

* Update submitty_student_auto_feed.php

Add AUTH(entication) logging to student auto feed for preferred name change tracking.

* Create readme.md

Instructions on using the preferred name logging tool.

* Update preferred_name_logging.php

Update to log USER_ID token.