Added txfee_manual and txfee_auto to config file

Added txfee_manual and txfee_auto to config file so you can set two different transaction fees for manual and auto payouts
Changed txfee to txfee_auto and txfee_manual in payout.php
Changed txfee to txfee_manual in edit account manual payout request
Added txfee_manual and txfee_auto to smary_globals config array

removed txfee
Changed txfee to txfee_manual in account/edit.inc.php
Bump global.inc.dist.php version to 0.0.3

Changes from 0.0.2:
Added $config['txfee_auto']
Added $config['txfee_manual']
Removed $config['txfee']
Merge pull request #1412 from nicoschtein/patch-13

Issue 875 - Manual and Auto TXFee (REBASED again..)