* better case handling in SELCAL
* SELCAL in aircraft
* SELCAL selector, improved getter / setters
* changed cockpit SELCAL elements to promoted GUI element
* synchronized flightplan and cockpit SELCAL codes, used new signal/slot syntacs in flightplan
* added SELCAL in own aircraft context
* Formatting
* renaming
* fixed some issues of cppcheck
* new icons
* smooth scrolling in views, stretching for few columns
* fixed start timer in updatetimer
* background colors of some LEDs
* renamed fromQVariant to convertFromQVariant, the "from" methods imply the object is changed (fromJson, fromString ..)
* implemented fromQVariant - changing the object by QVariant
* moved toQVariant into PQ template
* free function setFromQVariant
* Aircraft ICAO class: hasXX methods (hasAircraftCombinedType(), ..)
* Index Variant map, contains(index)
* Deleted context_network_textmessages.cpp and moved it into impl.cpp (this was only 1 method)
* Fixed bug refs#228