Merge pull request #2854 from dogmaphobic/flickableInOfflineMaps

src/QtLocationPlugin/QGCMapTileSet.cpp

src/QtLocationPlugin/QGCMapUrlEngine.cpp

src/QtLocationPlugin/QGCTileCacheWorker.cpp

src/QtLocationPlugin/QGeoCodeReplyQGC.cpp

src/QtLocationPlugin/QGeoCodingManagerEngineQGC.cpp

src/QtLocationPlugin/QGeoMapReplyQGC.cpp

src/QtLocationPlugin/QGeoServiceProviderPluginQGC.cpp

src/QtLocationPlugin/QGeoTileFetcherQGC.cpp

src/QtLocationPlugin/QGeoTiledMappingManagerEngineQGC.cpp

src/QtLocationPlugin/QMLControl/OfflineMap.qml

src/QtLocationPlugin/QMLControl/QGCMapEngineManager.cc