* 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
* The map will be used with CSimulaorInfo to transfer a variable number of setting information about the flight simulator. It is being used, because it is already DBus and tupel compliant. The new name better fits its purpose.
* Add == operator for CIndexVariantMap (ambiguity error with tupels)