Build: Fixes for compiling and installing with SDL2 for Windows and Linux
configuration: Update to beta 2.0.15-rc5
Compass View: Add fix for compass calibration with DEV_IDs in use
Compass View: Add compatibility mode for compass calibration pre-AC3.2
Full Param Setup: Add EEPROM format fix for APM:Copter
Log replay: Fix for crash when loading tlogs, and another when tlogs stop playing
Control Widget: rename member variables (code review)
Merge remote-tracking branch 'upstream/master' into mac64
configuration: add a default directory for missions (flight plans)
Mission Widget: fix waypoint save dilaog not appearing
Firmware Loader: Fix for px4 PID misdetection
Merge remote-tracking branch 'upstream/master' into mac64
configuration: update to RC6
Merge remote-tracking branch 'upstream/master' into mac64
ComboBox Control: Fixes #522 combobox and layouts effected
Graph View: Fixes #521 Segmentation Fault

Fixes de-reference of NULL pointer and logs issue.
Action Widget: Fixes to layout to move mode drop down
Log Download: Additions to logging to improve debugging
configuration: update to 2.0.15 stable
Merge remote-tracking branch 'upstream/master' into mac64