Remove breadcrumbs plugin, do everthing on our own

	new file:   app/assets/images/separator-arrow.gif
	deleted:    app/assets/javascripts/libraries/xbreadcrumbs.js
	modified:   app/assets/javascripts/orangeproton.trail.js
	modified:   app/assets/javascripts/request.js
	modified:   app/assets/stylesheets/style.css.scss
	modified:   app/assets/stylesheets/tipsy.css
	deleted:    app/assets/stylesheets/xbreadcrumbs.css
	modified:   app/views/home/index.html.erb
Merge branch 'development' of github.com:pse4/orange-proton into development