new branch download
updated version date
added new language strings
check for existence of  before outputting download link
removed BOMs
Added namespace and acl checks for files included using the included plugin.
Remove special handling of the include plugin
Set global $ID during rendering to correct id
Merge pull request #1 from michitux/download

Remove special handling for the include plugin and set $ID
Updated ditaa and mathpublish paths, resulting from upgrade to new directory structure.
Update $ID to $oldID in epub_creator::create when user supplies title page.
Fixed path to Title page in Nav, fixed some spacing.
Added admin panel to update cache and delete unwanted epubs. Added option to remove permanent link to created epub from book creator page, and option to allow epub to delete working directories in data/meta after book is created.
update plugin.info.txt and added nl to end of several files
added mathjax support
Replaced hard-coded mathjax config with config files loaded from plugin's configration settings.
added renderer::nocache call to syntax.php
merge download with master