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after merge
ui tune
tune ui
add sessions
show sessions in event page
add omniauth and push to uhurucloud to test
add omniauth
added omniauth
move identity authentication to user model
seperate user registration and update profile form
tune event ui
user can upload avatar
only logged in user can enrol
require login for most actions
only admin can modify events
remove unit test and added rspec, guard and spork
add validation to enrolment
add registration