Update DQM and validation example job configuration files

Backported from CMSSW_7_0_X commit ece093f
Improve printout

Backported from CMSSW_7_0_X commit 252a83c
Fix Mu(Loose)Tau regex to find the correct (non-L1-prescaled) path

A better solution would be to look for the prescales of L1 seeds, but
that is left for future improvements.

Backported from CMSSW_7_0_X commit 98ca60b
Add comment for finding first L3 tau filter in unscheduled mode

Backported from CMSSW_7_0_X commit c72ed51
More coherent error messages

Backported from CMSSW_7_0_X commit 1746f94
Adjust L1 ET and eta binning to match the possible discrete values

Backported from CMSSW_7_0_X commit 8a2f6a6
Include L1 central jets after a configurable ET cut to L1(Lead|Second)Tau* histograms

Backported from CMSSW_7_0_X commit e8346ac