js partially fixed
symbolic link to images; some backbone
Add descriptio, remove avatar
merge js
Merge pull request #14 from julia-shcherbina/master

system awards, footer, write goal for mainpage
added django-braces
fixed login form
renamed ProjectForm to ProjectUsernameForm and added new UsernameForm
added logout link on base template
join user form tempalte
added SPAJoinView
deleted unnecessery var participant