Updates the limbo time to 1.5 seconds.

Fixes #74.

If you want to update the amount of time that tasks are in limbo you can edit
the Sis.SECONDS_IN_LIMBO_TIME variable in app/assets/javascripts/extras.js.
Adjust due dates styling

Change completed due dates to grey text, make all due date text sizes
consistent, made required due date bigger
Change "users" to "login" on homepage
Checkbox fixes
Change dispute button to grey
Merge branch 'flat-ui'
Merge branch 'master' of https://github.com/Gowiem/Sisyphus
Change description font size to 13px
Description edits

Adding margin above and below, un-italicizing
Change "+ Add Task" to a button (instead of having plain text)
Nav-Bar shadow

Added a slight box-shadow to the nav bar
Add a footer
Tags

Worked on tag size
Tags and Task hover
Added "submit feedback" button in footer
Fixes disputing breaking scrolling. Fixes #76

Fucking bootstrap wasting my time by not hiding their modal and breaking scrolling.
This commit makes sure it's dead and gone by removing the 'modal-open' class from
the body tag and removes the modal background when the user submits.
Merge branch 'master' of github.com:Gowiem/Sisyphus
Change footer to a lighter grey and add padding
Increase spacing below a sub-task
Datepicker

Changed the selection color for the datepicker