Councillor opinion now affects job performance

All job action events wherein councillor opinion of employer would play
a role in their MTTH or associated AI chance factors have been modified
by either the "PB standard employer opinion factors" modifier set (lower
factors are better) or the "PB inverse employer opinion factors"
modifier set (higher factors are better).  Factor curve is documented in
PB forum post here:

http://forum.paradoxplaza.com/forum/showthread.php?594436-Project-Balance&p=16628830&viewfull=1#post16628830

Now, it pays to reward your councillors and maintain your relationships
with them.  Concept based upon the principle that councillors that
dislike their employer will perform worse at their jobs, sometimes out
of spite and sometimes out of lack of investment, and in contrast,
councillors that are very satisfied with their job and their liege will
perform slightly better than others of equal skill.
Merge pull request #38 from zijistark/beta

Councillor opinion now affects job performance