[communication] [Xbee_API] DAT COMMIT. The one which corrects the "size 4" (and 6 and 17 and 19) bug.
* Implements timed reading wile reading escaped char (cause of the big bug).
* Modifies the return value of readByteEscaped() (why we couldn't detect it).
* Adds some check on size of payload.
[communication] Corrects displayed string in debug console.