remove rails-i18n
add seed for admin
add default user in question
add default roles
add default role; tag-permission
Merge branch 'master' of git://github.com/jerry134/web6ey into tag-permission

Conflicts:
	Gemfile
	app/views/questions/_form.html.erb
modify .gitignore
Merge pull request #40 from caok/tag-permission

Tag permission