configuration: update JSON object to 2.0.15-rc4
Link Manager: Move LoadSettings to a timer
Install Firmware: trigger port scan after 1s
Waypoint List: Fix #507, waypoint save dialog saying "open" instead of "save"
Comms: Fix #486, added a custom baud rate option, as well as fixing issues where the window would sometimes be behind the main window
Map Widget: Fix #483, adjusted waypoints so they use absolute index rather than relative, allowing for easier understanding of what waypoint corrosponds to which item in the waypoint list.
Maps Widget: Update Google MAPs API
build: ignore stash file
Action Widget: Associate Shortcuts with Meta+SHIFT &RTL/&Loiter/&Stabilize

This requires the Actions Tab to be selected.
configuration: update to RC5 (and revert back to Qt5.2.1)
Comms: Slightly modify the modality change to Comms Dialog

Setting the dialog as modal makes it appear as a ‘slide panel’
and this looks wrong on OSX
Log Download: Robustness improvements on log download