Code Clean up
Adding Manual Cache Control Page

This page is avilable for PHP 5.5.5+
Minor Fix: Evaluation of version_compare expression
Fix #2: Register Scripts and Styles in Dashboard only
Code Clean up

OPcache_dashboard::$hooks is for extensibility.
Update Version Number
Update Version Number
Merge branch 'master' of https://github.com/shield-9/opcache-dashboard
Bug Fix of  af6586140566b32053c757135b5fdabadee7200f
Fix #4: Correct Typo