Merging Development to master

Please get this tested. A few backend changes:

* Update and find blocks if chain forked
 * uses last valid block in DB to start fetching transactions from
* Work around coins that removed confirmations from the block information in RPC
* wallet balance calculations on Admin Panel
* Minimum amount for Manual Payouts
* coind address check ( was int, not string while doing getSingle)
* Cookie Domain fixed
 * You can now change cookie domain anytime without running into a login loop