Added disable checkbox to targets. Fixed bug with loading all values. Removed add and remove buttons.
Added neutral and target signal recording buttons.
Added PostOffice for communication between processes.
Signal recording is now functioning.
Added SignalProcessing class with two subclasses, FFT and signal. Moved some methods from ControllableWindow to ControlWindow.
More improvements on code structure.
Added some code to TemplateExtraction. Plot generators bug fixed.
Extraction window bug fixed.