- added drawing of correct calibration lines in drawHelperLines
- added data structure (wrapper) + controls (calib view)
for upper & lower frame limits & horizon line
 * added a bit of on-screen explanation of the various
calibration lines
- minor cleanup : removed unused code, console.log outputs
- added support for scan progress & elapsed time computation
 * was originally client side
 * added correct progress calculation
- changed calibration default camera view from noLaser to Laser
- cleaned up and stabilized client side dependencies:
 * "pinned" polymer element dependencies
 * on the way to semantic versioning
- ui improvements:
 * removed clutter
 * added progress bar during scans
 * adapted display of elapsed scan time for server side
 * styling and structural fixes
- minor ui cleanups
- added support for server side scan progress managment
into the wrapper element
- moved debug handling to the wrapper aswell
 * fixed a few param passing issues for the debug flag