added the add.html file for creating new instances of the assignment application. Made buttons that go back and go to other places.

Merge branch 'master' of https://gitlab.discs.ateneo.edu/josesacamos/widget_typewritermonkeycscimoment

Merge branch 'master' of https://gitlab.discs.ateneo.edu/josesacamos/widget_typewritermonkeycscimoment

applying changes made in the assignments application. Added images to the models.py file under the Assignments class. Created templates for html integration. Added image files. Created instances of images in assignment instances.

added reaction model to announcements app, edited announcement model, edited admin.py to appear in admin terminal, edited views.py to show changes in browser

added the Course model and modified the Assignment model for the foreign key and passing score. Editted the admin file for viewing in the admin terminal. Editted the views file for viewing in the browser.

Added the sacamos assignments model for the application. Fixed the admin panel and put instances of the assignment class. Fixed up the settings.py file in the inner project file due to having some issues with missing text.