Fix crash if call failed to start
Never call GUI methods from core directly, fix #436
Merge branch 'master' into debian/unstable
prepare for release

Signed-off-by: Kill Your TV <killyourtv@i2pmail.org>
Merge tag 'debian/0.0.0+git20141025.r1151-1' into ubuntu/trusty

qtox Debian release 0.0.0+git20141025.r1151-1
prepare for release

Signed-off-by: Kill Your TV <killyourtv@i2pmail.org>