Added select2 library and angularjs binding among the clientiside libraries.
The select2 library is now loaded and usable.
Merge origin/master
Updated sidebar menu with new style and voices.
Moved peers listing code, on the client side, from the network plugin to the peer plugin.
Merge origin/master
Basic tag implementation. Fake tags on the server.
Merge origin/master
Updated sidebar menu voices.
Updated setting browsing panel.
Updated repositories browsing panel.
Updated network browsing panel.
Updated sidebar menu voices styles.
Added references search to peers panel and updated graphic style of the icons.