Merge remote-tracking branch 'origin/feature/10222_refl_gui_review_changes'
Refs #10227.  Added files for GUI.

	modified:   ../Framework/Properties/Mantid.properties.template
	new file:   FilterEvents.py
	new file:   FilterEvents/Ui_MainWindow.py
	new file:   FilterEvents/__init__.py
	new file:   FilterEvents/eventFilterGUI.py

	modified:   FilterEvents.py
Refs #10227.  Modifed python module name.

On branch feature/10227_gui_filter_events
Changes to be committed:

	modified:   FilterEvents.py
Refs #10227.  Added ui design file.

On branch feature/10227_gui_filter_events
Changes to be committed:

      new file:   FilterEvents/MainWindow.ui
Merge branch 'feature/10227_gui_filter_events' into develop