If the aclinfo plugin is installed a new item for the page permissions
will be added to the sidebar menu.
Signed-off-by: Frieder Schrempf <dev@fris.de>
Now all toggling of the sidebar and the related menus is done through
the same click handler. HTML has been unified. All sidebar related
content is now in a single include file instead of several. Icons for
the site tools user tools and trace have been added.
The CSS for the whole sidebar still has to be refactored.
