Security: Added authorization option via cookie.

Signed-off-by: matematik7 <domen.ipavec@z-v.si>
Websocket: Added websocket sending capability to duda-raspberry.

Signed-off-by: matematik7 <domen.ipavec@z-v.si>
Gpio: Added interrupts via websocket.

Signed-off-by: matematik7 <domen.ipavec@z-v.si>
Merge branch 'websocket'

Conflicts:
	src/Makefile.in
	src/html/js/angular/gpio.js

Signed-off-by: matematik7 <domen.ipavec@z-v.si>