fixed pushing to heroku instruction
fixed a link + style on getting started
backend group: fixed leaving self group error message
redirect non-logged in users when calling logged in only methods on user + group controller
fixed HTML formatting
removed scrolling on tasks page
Changed date format in tasks to slashes rather than dashes
Also fixed the date format problem in the bill model
UserControllerSpec tests
Also fixed it in the home view controller, so it still displays on the calendar correctly
This branch fixed how dates were stored (into Date objects rather than strings)
and how they are displayed in the tasks/bills views (in US format with slashes)

Merge branch 'date_format'
Added Error Messages to SessionsControllerSpec
Merge branch 'master' of https://github.com/panjiw/Team-Player
Improved Comments on task_genertor_controller
 added ignore group invite
added signed_in_user to task_generators_controller
bill summary implemented
made bills view consistent with tasks view
Fixed group members not refreshing bug
Overdue tasks now display red