Fixes to HLT Run2 menu for 73X

Add to #5378

- Allow HLT_PFJet260 back in the GRun table (PS=0), for validation purposes

the bug fix requested in jira ticket CMSHLT-110:

- Migration of e+tau path to common electron WP
- Fix wrong settings in hltEle27WP85GsfMissingHitsFilter module