gril:fix queue removing in cancel group + style fixes

Signed-off-by: Jarko Poutiainen <Jarko.Poutiainen@oss.tieto.com>
Merge pull request #82 from jpoutiai/master

gril:fix queue removing in cancel group + style fixes
Merge pull request #83 from ptakalok/master

[rilmodem] Add support for RIL_REQUEST_SCREEN_STATE request
[rilmodem] Support for voice mailbox

Add support for voice mailbox (CPHS and MBDN). Enables speed dial to
voice mailbox from dialer and importing voice mailbox number to Settings
application.

Signed-off-by: Petri Takalokastari <petri.takalokastari@oss.tieto.com>