Merge pull request #19 from Atry/drop-down-width

Set the same width for all drop-down icons
Support site.bitbucket

Conflicts:
	_includes/sidebar.html
Merge branch 'master' of github.com:dbtek/dbyll into theme
Merge branch 'theme' into 汉化
Merge branch '汉化'

Conflicts:
	_includes/sidebar.html