Merge pull request #61 from czx0619/dev

Dev
show count rightly
Merge pull request #62 from juniwang/master

show count rightly
template
Merge pull request #64 from czx0619/dev

全屏位置和底部位置修改
Merge pull request #65 from XiaoxiongZheng/master

rails and mean templates
 fix email issue
Merge remote-tracking branch 'opentech/master'
docker template for ubuntu
Merge pull request #66 from juniwang/master

add template for ubuntu
index page update and hackathon page iframe size update