characters in html. Also missed a case where tracking wasn't turned
back on for previously tracked products. Organiser->Parent() was
returning an empty string when an organisation wasn't found, it now
returns false in this case as the empty string is a valid group.
Other changes were required to allow for this. Writer module needs
to set a default location for posts for Micropub to work. Tried to
improve how tooltips work in Reader module js. Also unread count is
accumulative so need to parse the current unread total before
modifying the page-select button.