Allow to exclude items from search [5.3.0-B1]
Right now if an item (page, category, link, article, etc.) is entered in the database, then built-in search engine will find it. In some cases this behavior isn't desired one (e.g. some secret page, that can only be accessed with a direct link).
Solution
add the "IncludeInSearch" checkbox (checked by default) to categories & category items
in the "OnSimpleSearch" event take the value of above checkbox into account
when during automatic theme scan red folders are created (categories, that were specified in meta comment of found templates) then don't include them in search by default
as part of upgrade script exclude red folders from search
Code for dealing with red folders can be taken from related discussion implementation.