Communication between plugin and the frontend application is established.
Ability to create and update variables of type int, double and QString
is done.

Removed the API Property data structures and implemented the storage of
parameter variables at frontend side on request of the plugins.
[New] Added the multi value parameter support.
User can define multivalue parameters as set of strings. And user will
be given a comboBox control to select parameters.

[ISSUE] memory leak. Due to an error in deletion of created parameters
stored in frontend app data structures (QMaps). Yet to be fixed.
Port to Qt 5 is complete. The code base is compatible with both Qt version
4 and 5.

	modified:   NoobaFE/MainWindow.cpp
	modified:   NoobaFE/NoobaEye.h
	modified:   NoobaFE/NoobaFE.pro
	modified:   NoobaPluginAPI/NoobaPluginAPI.pro
	modified:   NoobaVSS.pro