Merge pull request #80 from Jael/master

修改了时间的显示
finished the no answer quetion list first version
answers_count remoted
Merge pull request #81 from hlee/master

show no answer questions list
Fixed #48
Merge pull request #82 from hlee/master

Fixed break spec of answer counter
add chosen
Merge pull request #84 from caok/chosen

add chosen
modify question show layout
add user info into question show page and remove side about us paragraph
change new question to I want to ask question
modify answers showing
add tags cloud to the side bar and change some english letter to chinese
added cache counter for answer
Merge pull request #86 from hlee/master

one more counter cache for answer
update scope of no answser using arel_table and cache counter
fixed rspec of scope question
Merge pull request #87 from hlee/master

Counter cache for answer
add assets for heroku deploy
Added no answer chain perfectly
remote assets for heroku deploy