Updated to move attenuation to instrument definition file.

Refs #4841
Updated OSIRIS and IRIS parameter files.

Refs #4841
refs #7541. Fix problem with early exit.

This handler loops through the property dialogs looking for other property dialogs that correspond to input workspaces. If the loop finds an input workspace, then it immediately assumes that the workspace is suitable and exits the loop. The code block then may find that the workspace name returned is empty, but it's too late the loop has been exited, so there's no opportunity to inspect the rest of the properties. Fix is to apply the check for an empty workspace name within the loop.
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
Removed unused parameter from the constructor.

Refs #5116
Implemented removing peaks.  Refs #7652.
Cleaned the code.  Refs #7652.
Added class NeutronBk2BkExpConvPVoigt.  Refs #7653.
Refactor codes.  Refs #7653.

Moved some methods belonged to ThermalNeutronBk2BkExpConvPVoigt to
IPowderDiffPeakFunction because they are used by
NeutronBk2BkExpConvPVoigt, too.
Checkpointing work.  Refs #7653.
Added new widget and connected it to Fury interface.

Refs #7681
Replacing check for valid res file.

Refs #7681