Move fitEffAcc_trigger.cc

Also change fitting to fit the background at the same time as the
signal.
Add new functions to ZSmearer

There are two new functions which allow the user to set the smearing
parameters for the electrons, either using one set of mean and sigma for
both, or setting one for each electron.
Add in setable smearing in fitEffAcc_hf_trigger.cc
Add Smearing as a free parameter in BackgroundFunctions.cc
Add smearing fitting in fitEffAcc_hf_trigger.cc
Add BAD 20131024_et_hf_trigger_eff.txt

Do not use this file for science, it is just for testing the
cross-section!
Add in WP80+ECALSC
Merge branch 'alex_dev'
Merge branch 'master' of github.com:UMN-CMS/ZShape_Analysis