handle DAG within importUsers

[couthcommander]

Fixes several small issues preventing DAG assignment within importUsers.

#500

This would replace pull request #499

[spgarbet]

Love the user of logWarning directly. News is in recommended format.

However, I'm seeing errors I think might related to database state.

✖ | 2 30 | 101-userMethods-Functionality [58.5s]
──────────────────────────────────────────────────────────────────
Failure (test-101-userMethods-Functionality.R:23:5): Import / Export Users
Users1 not equal to Users2.
Component “forms”: 3 string mismatches
Component “forms_export”: 3 string mismatches

Failure (test-101-userMethods-Functionality.R:147:5): Import User DAG Assignments
importUsers(rcon, data = Users) did not produce any warnings.
──────────────────────────────────────────────────────────────────
✔ | 20 | 102-userRoleMethods-ArgumentValidation
✔ | 13 | 102-userRoleMethods-Functionality [14.4s]

[spgarbet]

This looks right. The flush_dag_assignment() calls seem to be the secret sauce.

[ FAIL 0 | WARN 0 | SKIP 13 | PASS 2062 ]