Merge branch 'hotfix/44' into develop
Merge branch 'hotfix/46' into develop
refactoring. #48

Test-unit to rspec.
Add RSpec
- AttachmentUtil module
- StringUtil module
- User class
- Function Permission class
refactoring. #48

Move AttachmentUtil module lib to models.
Add RSpec.
- Summary class
refactoring. #48

Add RSpec.
- Content class
Merge branch 'hotfix/49' into develop
fixed. #20

Modified, show page layout.
Modified, not overflow for pre tags.
fixed. #51

attachments to database
fixed. #52

contents to database
modified. #52

Delete comment out of line
fixed. #50

authentication by devise.
fixed. #53

modified README.
Remove unnecessary files.
modified README. #53

I reviewed the procedure
Merge branch 'develop'