* [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
* [UPDATED] Cronjobs to store real values, display with coin precision
* [UPDATED] Templates to use new coin precision setting in dashboard
* [UPDATED] JS API calls to use new precision setting too
* [UPDATED] PPS Value is displayed as coin precision + 8
This should help with #2216 and address issues with coins where rounding
of 12 was not enough.
