Merge pull request #5 from satzcoal/master

hello1014_2 _ook
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Merge remote-tracking branch 'remotes/xiaoyu/master'

Conflicts:
	app/assets/javascripts/pannonia/js/files/functions_blank.js
	app/views/categories/_new_sub.erb
	app/views/categories/show.html.erb
	db/schema.rb