Update theme_essential.php

Add translate 'visibleadminonly'
Removing to fix bug with rendering arrows in buttons
Change color of sub-menu items in custommenu to match theme settings
Merge pull request #25 from felixod/patch-2

Update theme_essential.php
Replacing hardcoded text with lang string
Remove block heading underline when minimised
Format the Debug Info

Only basic at the moment. Will add cache_store information at a later
date
Updating Performance Info Styling
Fixing "Undefined variable: regionbsid" as reported
Bumping version number
Fixing "Undefined variable: regionbsid" as reported
Changed icon of Perfomrnce info
Removing old iMoot code
Remove side=post from frontpage as not needed
Chages to performance info formattig
Update theme_essential.php

Add comment about Compatibility Mode into ie7message
Merge pull request #29 from jgcracknell/patch-1

Update theme_essential.php