Removed body.active_admin encapsulation for global-reset.
Removed body.active_admin encapsulation for other active admin styles..
Merge 'unencapsulate-css-global-reset' of github.com/tinynumbers/active_admin

Conflicts:
	app/assets/stylesheets/active_admin/_base.css.scss
	lib/generators/active_admin/assets/templates/3.1/active_admin.css.scss