Bunch of changes to decrease false positives and update dictionaries.

Fairly extensive updates to the dictionaries to:

update some frequently covered countries for leadership changes in the last few years
improve actor accuracy by tweaking actor and agent files
reduce miscodings (specifically 190s) by changing the verb file.
dramatically ramp up the ruthlessness of the discard list
make assorted changes based on the first version of the Phoenix data

openeventdata / Dictionaries