Storing type field

Storing admin them flag!
Added restriction for admin theme

Added if condition that restrict admin theme from the display.
Update ThemeManager.php
Merge pull request #2987 from dakshhmehta/patch-2

Admin Theme should not be displayed! [ Fix to #2985 ]
Put modified callback logic into MY_Form_validation
Merge branch '2.3/develop' of git://github.com/pyrocms/pyrocms into 2.3/develop
Child pages looked a bit funky.