Added more validations
generated groups scaffold
testing git commit
generated group_membership scaffold, edited group, user, and group_membership models, added add to group button in users view (doesn't work), trying to add users to groups using many to many relationship
generated group_membership scaffold, edited group, user, and group_membership models, added add to group button in users view (doesn't work), trying to add users to groups using many to many relationship
Added validates to the group model.
Merge branch 'master' of https://github.com/YaleSTC/poplar

Conflicts:
	app/models/group.rb
played with add to group link
added link to new group membership
fixed name validation
group membership now allows for creation
got rid of manual relational table
generated proper tables
users to groups- 1
group members now display, playing with ways to add users to groups
fixed some errors with group controller
added user checkboxes
can now add users to groups in edit on groups page
Authentication so only admins can see/change netid and admin
Changed the layouts of the user and group lists to remove show button and link to show page by clicking user/group name. Also removed some destroy and edit options to non admins.