Add gems for testing
Merge pull request #14 from develop7/edge

Misc fixes
Add some test
Add some test
merge
rspec test
more pretty error show
Pretty error show for comments and task creation
fix js for login
clear some code in test
Fix: fixed Active Admin admin_users migration

1. Changed "change_table" to "create_table" in migration file

There was "change_table admin_users" in 20130411201503_add_devise_to_admin_users.rb migration,
but we don't have admin_users table at this moment.
active_admin integration
update rails
update gemfiles
update registration page
new commit
jquery upgrate to 1.9
mirzayanov acess removed
Add some useful development gems.
Add gem squeel. Squeel rocks!
Link sprint with tasks, add sprint select to task edit form.
Add CanCan role manage_sprints.
View-based restrictions.
Controller check for manage_sprints role.