Decoupled object acquisition from event selection

Created eventAnalysis class for object acquisition, and a first tauDileptonSelection for event selection.
Performance has decreased, though. Must investigate whether this is due to the met propagation process brought up
Also, need to unify jet scaling and met propagation
Condensed jet smearing and met propagation in one run

No more need for two separate loops for smearing jets and propagating to met.
Still takes more than the original code.
Switched back to non-global-vars analysis

Global-vars made the running time explode (+50%).
Must move to generic eventSelection, though
Optimization of vars in jets loop

Define jet factor inside loop for speed
Merge branch 'devel'