users grade
grade need authority to update or create
test user grade
home index page add user grade
project index link repo title
rm default user grade, modify user test
revert project index page
update user grade
home page add user show permissions, tidy up gemfile
Merge remote-tracking branch 'upsteam/master'

Conflicts:
	config/routes.rb
Merge pull request #53 from mouse-lin/master

user grade
Merge pull request #54 from vincent178/master

READY: cache project sql