Just some bug fixes.

Fixes

• Added autoReconnect=true to default JDBC URL
• Fixed class initialization issue with MiniDNS trying to load /etc/resolv.conf when not readable
• Fixed config migration running every time when "-SNAPSHOT" was in ConfigVersion
• Fixed falling back to English when requested language doesn't exist
• Fixed metrics enable check not being flipped (no wonder bStats said nobody was using 1.18.0)
• Relocate Jackson due to dependency conflict