Removed fitPropBrowser parameter from fittingRequested signal and renamed it.

fitPropBrowser will be set using different signal.

Refs #5116
Merge remote-tracking branch 'origin/master' into feature/5116_fit_with_graph_toolbar

Conflicts:
	Code/Mantid/MantidQt/CustomInterfaces/src/MuonAnalysis.cpp
Replaced the old signal used in the previous ticket

Refs #5166
Refactored activatePPTool so it goes through window list only once.

Removed irrelevant warning.

Refs #5116
Added a possibility to change the used fit property browser.

Refs #5116
A new method to get the name of the custom interface.

Refs #5116
Changing used fit property browser to Muon one, when interface is launched.

And resetting to default when is closed.

Refs #5116
Made it so that Muon fit property browser is used only if we are on the DA tab.

Refs #5116
Removed the usage of the old values for new PP tool.

Automatic ones are used, as everywhere. This didn't make sense when using graph tools, e.g. zoom.

Refs #5116
Merge branch 'feature/5116_fit_with_graph_toolbar' into develop