Log to KML button

Add a "Log to KML" button in TerminalConsole to allow
generation of KML/KMZ file from a dataflash log already
on the file system.

When a UI for graphing logs and such is available, the
"Log to KML" button will (should?) be moved there.
Fix 3DR Radio Config View not saving current params to EEPROM
Merge remote-tracking branch 'upstream/master'