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Merge pull request #1483 from rog1121/patch-4

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[Optimize] By default only sample 3 minutes worth of shares
Update edit.inc.php

txfee is old variable, replaced with txfee_manual
stupid rebase
[FIX] Math fart
[Optimize] SQL Queries : Remove joins from account table
[FIX] Whoopsie
[CLEAN] Clean spacing
[Optimize] Switched calls to username from id
[FIX] Double whoopsie
[Optimize] Switched calls to username from id
[Optimize] Switched calls to username from id
[Optimize] Switched calls to username from id
[Optimize] Switched calls to username from id
[Optimize] Switched calls to username from id
[Optimize] Switched calls to username from id
[FIX] FFS
[Enhance] Improved logging
[Fix] Added error messaging to all
[Enhance] PPS / Payout Crons - Improved logging and and improved fail safes
[Optimize] Removed Coin Daemon / RPC Address Validation