Merge pull request #280 from goldrush/develop

20130828リリース
Merge pull request #290 from goldrush/develop

Develop
Merge pull request #292 from goldrush/develop

Develop
Merge pull request #294 from goldrush/develop

Develop
#441 修正
#441 修正
Merge pull request #296 from jomjomni/master

#441 修正
#441 修正
Merge pull request #297 from jomjomni/master

#441 修正
gem 'device' 更新対応
Merge pull request #298 from jomjomni/master

gem 'device' 更新対応
#441 修正
Merge pull request #299 from jomjomni/master

#441 修正
bugfix
Merge pull request #300 from goldrush/master

Back port
Gemfile修正、各GemのVersion固定化
Gemfile修正
Merge pull request #301 from jomjomni/master

Gemfile修正, 'devise'version固定
#439 修正
Merge pull request #302 from jomjomni/master

#439 修正