Added methods to new Webp2pLocal class
Added events to Webp2pLocal and removed all references to PeersManager
Sorted API functions and events on Webp2pLocal
Using native Javascript events instead of ad-hoc objects
Fixed file name and self reference bug
Started development of worker interface
Get number of peers on a callback
Fixed typho
Started backed for (shared)workers and websockets
Database created inside Webp2pLocal object
Little fix-ups
Merge branch 'master' into issue_54__Add_more_push_services_for_handshake_channel