corret some mistakes
refactor the create_activity.js and some of the sign_up.js
refactor the sign_up.js
refactor the sign_up.js and add some function to the activity.js
finish all the refactor
change the .html to .jade and add the init.js
delete some unuseful comments
correct some mistake in the message.js
add the price_list.jade and price_sign_up.jade
add price_list.js and price_sign_up.js and the button of 开始 can be used
create price competition and save it
when a price competition is signing up,the create activity button and the start sign up button are disabled
when a price competition is signing up,the background of price competition and the activity are yellow
correct some bugs
finish the dealing with price messages
correct some bugs of price_sign_up.js
revised some css in the price_list.jade,price_sign_up.jade and sign_up.jade
add jade