added kaminari and pagination for events, friends, groups
kaminari default_per_page changed to 5
added ransack with simple_form integration
remark style should influence slides only
datetimepicker for rails
search form wrapper for simple_form
searchable events
searchable friends
searchable groups
gem devise
setup User model with devise
require user authentication for events, friends, groups
devise views
specs fix
has_many and belongs_to relations
updated seeds
load resources based on current_user
spec fixes
GroupMembership model
add group membership in friend edit