added listing page contentID and path to MuraEventHandler

Added the listing page contentID and path to the MuraEventHandler. This
should be wrapped in a settings check so that the overhead of loading an
additional content object is not felt by those that do not need it.
Merge branch 'develop' into feature-muracontentnav
Made content object lookup for listing pages a mura setting
Updated Version 3.1.34.117
Merge branch 'develop' of ssh://git@github.com/ten24/Slatwall into feature-orderpaymenterms