Made QGCCorePlugin derive from QGCToolBox and expose everything through the same mechanism as everything else.

This prevents problems with toolbox references from inside
QGCTool::setToolbox calls.

Adding a dialog telling the user the map cache database has been reset.

Adding a dialog telling the user the map cache database has been reset.

Map control use different border color based on map type

- Convert mission load/save to it
- Allow parameter load/save on mobile

 - Request list of all parameters, expecting device to lead each component with _HASH_CHECK cache value
 - Test for hash collision, if so our cache is valid and respond with _HASH_CHECK to stop listing
 - Else: let listing continue as normal to get updated param values
 - Store each cache by systemID + componentID

For #2586