Refs #8284 Swap ConvFit to use DataSelector for Sample & Res.
Refs #8284 Modify Fury to use a DataSelector for Res input.
Merge branch 'feature/5121_furyfit_fix_params' into feature/8284_fury_convfit_data_selector

Refs #8284

Conflicts:
	Code/Mantid/scripts/Inelastic/IndirectCommon.py
	Code/Mantid/scripts/Inelastic/IndirectDataAnalysis.py
Refs #8284 Fix file extension filtering.
Refs #8284 Remove spacer from Fury interface.

This allows it to expand more naturally when resized.
Merge branch 'feature/8284_fury_convfit_data_selector' of github.com:mantidproject/mantid into feature/8284_fury_convfit_data_selector
Merge branch 'master' into feature/8284_fury_convfit_data_selector
Merge branch 'master' into feature/8284_fury_convfit_data_selector

Refs #8284

Conflicts:
	Code/Mantid/scripts/Inelastic/IndirectCommon.py
	Code/Mantid/scripts/Inelastic/IndirectDataAnalysis.py
Merge remote-tracking branch 'origin/feature/8284_fury_convfit_data_selector'