configuration: update JSON object for 'beta' releases
QuickView Widget: Fixes #405 rounding error in HDOP and COG values
MAP Widget: Changes to support better zooming sensitivity (slider)
MAP Widget: Improves sensitivity of Mouse Zooming with scroll wheel
Droneshare Widget: Fixed API to return Url
QuickView Widget: Fixes QVariant toDouble conversion issues.

Also adds logging to warn if conversion is failing.
AutoUpdate: Fix Typo in parameter name
Autoupdate: Fix variables being undefined.
APM MAV: Add new colorForMode() API
Graphs View: Fixes #74 Add support for Plane/Rover to KMZ generation.
APM MAV: Rename Hybrid Loiter to Position Hold
Autoupdate: Fix regexp definition for version update
UAS: Fix floats to be doubles to avoid conversion errors
MainWindow: Lower maximum required width to support 1024x600 screen widths
Merge remote-tracking branch 'upstream/master' into 274