New Feature: edited createUser_form, views, and models of homepage app to allow users to add their department in user creation

New Feature: added createUser and newUser classes in homepage/views.py and created createUser_form.html to allow people to create their own users and save them in the database

Improvement: added foreign key to WidgetUser model in homepage instead of the Department model for ease of access of fields. Also edited urls.py

Manual Merge: Merged 'forum' branch to master successfully.  Some database data from forum could not be carried over because of database integrity issues.

Forum

See merge request !6

Revert "Merge branch 'forum' into 'master'"

See merge request !5

This reverts merge request !4

Forum

See merge request !4