crop image by center
rm useless line
add codeclimate bugdet
refactor tag index page
Merge pull request #29 from HH-project/croped_imgs

crop image by center
Merge pull request #32 from HH-project/refactor_tag_cloud_helper

refactor tag index page
Merge branch 'dev' into about_page

Conflicts:
	app/views/tags/index.html.haml
fix paddings; add animate to about js