Fixed page title and header image

Styles were loaded before $Header and $HeaderImg variables were set
causing them to be blank on report generation. Properly set the variable
replacements in the style templates.
Corrected Plugin 20 version checking

The version numbers checked before would prevent any 4.1 hosts from
having their Tech Support Mode status checked.
Updated plugin 59: Added ability to filter datastores like local or datastore1 from the Storage IO enabed check
Merge pull request #64 from CoteRL/master

Fixed page title and header image
Merge pull request #66 from russshearer/master

Updated plugin 59: Added ability to filter datastores like local or data...
Merge branch 'master' of https://github.com/alanrenouf/vCheck-vSphere