Reorganize modules

[jeremyjbowers]

They're in an awful state right now.

[jeremyjbowers]

I think I want to do something like this:

docket orders $TERM
docket orders --start $TERM1 --end $TERM2

for orders, opinions and grants.

[jeremyjbowers]

This Load() convention is not great. But I need to figure out what the super-class is -- or do I even need one?