empty string in latest version of MariaDB so added an extra value
to the enum. Fixed a warning in new version of PHP due to strings
being coerced to numbers in a number of modules. Also now do more
is_array checks before using count due to new warnings. Fixed a
number of bugs in the Post module, changed html for links due to
the way ckeditor re-writes html, post_draft table entry is now
removed when the draft is published. Fixed a typo in the Autoupdate
module, also Update method wasn't called during last update of
this module, so leaving new style rules in to check process.