fix #737 youtube url box should not shown when card/edit opened
fix #744 make youtube iframe aspect 4:3 in recipes/sho
Merge pull request #743 from mozilla-japan/bug737

fix #737 youtube url box should not shown when card/edit opened
Merge pull request #745 from mozilla-japan/bug744

fix #744 make youtube iframe aspect 4:3 in recipes/sho
close #734 fix collaborators/index style
Merge pull request #746 from mozilla-japan/task734

close #734 fix collaborators/index style
fix #739 flexslider は編集したものだけリロードする