Author: Jake Dallimore
MDL-78576 mod_lti: fail launch early when preconfigured tool not found
In the case where the instance is associated with a preconfigured tool
and where that tool type has since been removed, throw an exception
early.
http://git.moodle.org/gw?p=moodle.git;a=commit;h=42c24a3223a9c133b2403a2dc9648692ad36e885
http://github.com/moodle/moodle/commit/42c24a3223a9c133b2403a2dc9648692ad36e885
+ 4.3 en [tooltypenotfounderror,mod_lti]