use active_link_to instaead simple-navigation, move navigations from config into views
add translations for navigations
Merge branch 'master' into remove-simple-navigation-issue-74

Conflicts:
	Gemfile
Replace simple_navigation with active_link_to in Gemfile
Fix Gemfile
use active_link_to instaead simple-navigation, move navigations from config into views
add translations for navigations
Merge branch 'remove-simple-navigation-issue-74' of https://github.com/fs/rails-base into remove-simple-navigation-issue-74
Merge pull request #197 from fs/remove-simple-navigation-issue-74

use active_link_to instead simple-navigation, move navigations from config into views