Create liquid_payout.php

Add support for a cronjob to send liquid assets.

Maintains a set reserve and sends only when a wallet address is set; and the threshold is set in the config.
Update run-crons.sh

added liquid_payout.php
Update run-payout.sh

added liquid_payout.php
Update version.inc.php

changed config to 0.0.2 to support liquid_payout.php cron
Update global.inc.dist.php

added config variabled for the liquid_payout.php cronjob
Update liquid_payout.php

formatting
Update global.inc.dist.php

removed wallet address :)
[CLEANUP] Code cleanup, error checking

Fixes #1315 once merged.
[CLEANUP] Removed newline
[FIX] Config option detection
[FIX] Config option detection
[FIX] End cronjob too
[FIX] Catch new jsonRPC exception
[FIX] Better error handling