updated gem and dependencies to use twitter bootstrap 3
updated meta navi
removed not needed code
migrated bootstraps class names to version 3.0.0.
corrected navi links and added missing pages
improved header template
improved header
retabbed _menu_footer_broadcasts
improved header, a lot
Merge branch 'add-missing-routes' into update-bootstrap-83

Conflicts:
	app/views/layouts/_footer.html.erb
	app/views/layouts/_header.html.erb
Merge branch 'master' into update-bootstrap-83

Conflicts:
	app/views/pages/home.html.erb
updated bootstrap classes
fixed header bugs
updated submenu of "Sendoer"
updated sender main page
corrected naming of sender page
updated programm submenu and main page
updated submenu of Mitmachen and main page
improved menu prrogramm
fixed sub navs