Implemented dashboard page. This includes modifying views.py and moving the index view's contents into dashboard.html, a newly-created template for the implementation. Additionally, base.html, the app-level base template, was created.

Assignmentsv2 done

See merge request !13

Merge branch 'assignmentsv2' of https://gitlab.discs.ateneo.edu/almira.redoble/midterm_vincentdjango into assignmentsv2

Assignmentsv2 frontendstuff

See merge request !12

populated the assignments app again because it got deleted somehow. Hopefully this doesn't overwritesomething