Testnet update @mattczt

Yesterday @davidtavarez and i worked on the testnet reliability, i have abandoned my node and wallet as it was losing connection every couple of days.

Thanks to David, we now have a hosted server with node, mining stratum and wallet listener. This should resolve the issues that i have been having, it will also make it easier for others to join testnet mining.

For now, all of the mining rewards (tgrin) will go to the wallet on the server.
We may need to come up with an easy way to distribute it to the community as it will be needed to test upcoming projects.