when switching to PFEG in PF mode by customize, ensure mustache SCs are used in all inputs to PF for consistency
fix conversions not being linked in track-track matching (was commented out by accident)
fully clone the conversion sequence
Restore sanity check in MassSearchReplaceAnyInputTagVisitor; skip it only on demand.

Conflicts:
	RecoEgamma/Configuration/python/customizePFforEGammaGED.py
Merge pull request #1273 from lgray/conv_and_customize_fixes

Reco updates -- Patches on top of #1242 (Egamma improvements), consistency fixes and conversions