Milestone Release v1_beta5 - 09/17/15

Milestone Release v1_beta5 - 09/17/15

Documentation files are not generated in the src dir anymore, but in the
stage one, and documentation groups got some love.

In the comms modules, an http server implementation got in (by means of
lib microhttpd), with various servers nodes already in (for basic packet
types). In OIC, we now use device identifier for OIC devices instead of
MAC addresses. Finally, we added an mqtt API in Soletta.

fbp-generator got a bunch of fixes WRT to array ports.

A new byte comparison node got in.

In the small OSes front, Riot had implemented machine_id, serial number
and OS version getters.

A lot of samples missing in the samples make rule are now in and
functional. Sample dependencies were fixed too.