Updated interface for parameter selection

Source/Processors/DataThreads/FPGAThread.cpp

Source/Processors/Editors/ChannelSelector.cpp

Source/Processors/Editors/EventNodeEditor.cpp

Source/Processors/Editors/FilterEditor.cpp

Source/Processors/Editors/GenericEditor.cpp

Source/Processors/Editors/GenericEditor.h

Source/Processors/Editors/LfpDisplayEditor.cpp

Source/Processors/Editors/ParameterEditor.cpp

Source/Processors/Editors/ParameterEditor.h

Source/Processors/Editors/VisualizerEditor.cpp

Source/Processors/EventNode.cpp

Source/Processors/EventNode.h

Source/Processors/FilterNode.cpp

Source/Processors/GenericProcessor.cpp

Source/Processors/LfpDisplayNode.cpp

Source/Processors/Parameter.cpp

Source/Processors/Parameter.h

Source/Processors/SignalGenerator.cpp