Minor edits

Added the new commands to plugin.yml for registration on startup.
Made the methods in EconWrapper explicitly public.  Also added two get
currency name methods (pulls from Vault).
Reworked Towns class to use rankupItemID from Muni class (pulled from
config) and actually take payment for rankup (plus uncommented the
rankup method).  Created the payFromTB method.
Changed the database configuration a bit (added PK's, resized some
varchars)
Unsure

Stupid little character change in config.yml preventing me from syncing
so adding this to a commit.
Deletion

DatabaseFunctions was renamed to dbWrapper but somehow this slipped
through.