* [ADDED] New option to coin class to change coin value precision
* [UPDATE] SQL Transactions table from double to decimal(50,30)
* [REMOVED] Admin setting for coin value precision
* [UPDATE] JS files to honor coin precision
* [ADDED] New coin_addresses table to upgrade script and base file
* [MIGRATE] Move coin_address from accounts to coin_addresses table
* [UPDATE] Updated all classes/pages/scripts to use new coin address class
* [UPDATE] DB_VERSION 0.0.12