Fixed error message on parsing a step size

the message was error parsing device number
Fix openhab_default.cfg MySQL JDBC template text
Astro: fix error in DateTimeUtil::getRange
Fixed null pointer exception on OpenHab startup.
Debug log instances of OpenSprinkler library not initialized.
Added retry and expire values for messages with priority of 2 as required
by Pushover API.
Default config file changes for Pushover.
Merge pull request #1573 from mattgwatson/mysql-default-config-sample-error

Fix openhab_default.cfg MySQL JDBC template text
Merge pull request #1571 from mstolt/patch-1

Fixed error message on parsing a step size
Merge pull request #1581 from stefanroellin/astro-fix-getrange

Astro: fix error in DateTimeUtil::getRange
Merge pull request #1585 from CrackerStealth/pushoverenhance

Pushover API Requires Retry and Expire Values For Priority = 2
Merge pull request #1583 from CrackerStealth/opensprinklerenhance

OpenSprinkler: Null Pointer on Startup Fix