Merge pull request #61 from hlee/master

fixed one rspec test
Merge pull request #64 from hlee/master

added counter of questions
Fixed #47
add sidebar partial
move add button to the sidebar
add rspec for ability
remove modify and delete button from index page
add database_cleaner
modify the rspec of ability
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Merge remote-tracking branch 'upstream/master'
add question column to the users table
Merge remote-tracking branch 'upstream/master'
add rspec for question and answer
Merge branch 'master' of git://github.com/jerry134/web6ey
User can see all the tags from the nav
add the tags file
Merge pull request #69 from caok/master

add rspec for model
Merge pull request #70 from Jael/master

显示所有tags
fixed spec for tags