update patch in start.php
Merge pull request #633 from bfincher/misc_other_retention

Misc other retention
removed query cache defrag, as this can cause mysql to lock up
Merge pull request #637 from nZEDb/dev

Dev
added confirm popup to optimization - josh
Merge pull request #638 from nZEDb/dev

added confirm popup to optimization - josh
Merge branch 'master' into brian