Merge pull request #3 from earth660/generate-top-page

Generate top page
sync test
update top page
remove cached public/assets
Merge branch 'dev' of github.com:earth660/oz into dev
update template
redirect to teachers/login if unauthenticated
mayo test
fix top page
add login function
fix display code application.html.erb
Merge branch 'generate-top-page' into dev
Merge remote-tracking branch 'origin' into dev
partial login form
partial signup form
Merge branch 'dev' of github.com:earth660/oz into dev
Change to => render partial Symbol: 'hoge'
add placeholder to mail and password
change devise routing static
先生フォーム追加〜