Added dependencies to start, removed R14-limitation, rebar updated
Old calls replaced wiht new ones, dispatch rules changed accordingly.
Old interface terminate/2 calls changed to modern terminate/3
Static files (js, css, etc) repaired
Cowboy interfaces repaired.

Atoms methods ('GET') replaced by binaries (<<GET>>).
Added paths parsing.
'cowboy_http_websocket' replaced with modern 'cowboy_websocket'.
Added default env to sys.config.
Added TODO list.
merge