add new sample project. #2

Add Sample content2db
modified. #1

Modified database schema.
Add readme.
add function. #2

Add Functions
- Save the content
- Change model timezone (utc to local)
add functions. #2

Add Functions
- remove content
- children list
- breadcrumb list
add functions. #2

Add Functions
- remove all content
add functions. #2

Add Functions
- editing cancel
add new sample project. #3

Add Sample auth by devise
add functions. #3

Add Functions
- View of Sign in
modified. #3

Modified user registration admin only
modified. #3

Update each view.
add functions. #3

Don't sign-up in the normal user
add function. #3

Add initial database script
add functions. #3

user registration of admin
modified. #3

modified error message css.
modified. #3

Update devise view design
modified devise view design. #3
modified login-window. #3

if not referer, don't show message
Merge branch 'feature/2' into develop
Merge branch 'feature/1' into develop