Prevent frame skipping if there is no IMU
Verbose messages changed from LOG to DLOG
"Display barcode" button does not crash
Vicalib aborts if the camera or the imu cant be created
Ignore imu if there is not vicalib-task
Revert "Ignore imu if there is not vicalib-task"

This reverts commit 2c39f2650a2e2ef4079b384641429fa082200871.
Ignore imu if there is not vicalib-task
TIMESTAMPINFO changed to debug level
Interpolation buffer range function changed
Merge pull request #8 from arpg/fix/skip-images

tested a logfile against a list of images + CSV from IMU data and the resulting cameras.xml file is almost the same.