add id for main bar
recover container
css fixes
Merge branch 'board_dev' of https://github.com/TFcis/SkyOnlineJudge into stylesheets
buttons & login/register page(1)
buttons & login/register page(2)
buttons & login/register page(3)
more tweaks
resolved conflicts + extended board support
conflict resolution
Merge branch 'stylesheets' of github.com:TFcis/TNFSHOnlineJudge into board_dev