Modified main CSS and layout so that the page has a max width instead of just margins.
Modified navbar to make it collapsable (for mobile browsers).

Modified stylings to make things more mobile friendly.
Fixed CSS issues with Day and Add/Edit task modals.
Removed headers from Login Day and Task index. IMO the pages themselves are self explanitory and don't require a clunky header.

Cleaned up the titles for each of the pages.

Modified the header for the home page.
Added alert-danger div around ValidationSummary to make it more apparent that those are errors.