* Added new "identifier" attribute in JSON metadata files
* "identifier" is now the one that makes plugins unique
* "name" attribute is a human-readable name
* Removed obsolete signal from IContextSimulator
* Removed connectToSimulator() method from IContextSimulator as it is no
longer relevant
* CSimulatorComponent updates automatically when simulator disconnects
* FS9 & FSX drivers update (including FSCommon)
To provide maximum flexibility, the simulator info is specified by each
plugin in the JSON metadata file.
* Renamed SCimulatorInfo to CSimulatorPluginInfo
* Removed pre-defined simulator infos (UnspecifiedSim, FSX, etc)
* CContextSimulator keeps track of which plugin is loaded and its info
* QSignalMapper keeps track of which listener emitted the simulatorStared() signal
* CSimulatorPluginInfo contains name, simulator name and description
* TODO: GUI part
* TODO: CTestFsCommon