SAK-25783

Prefix potentially costly doDebug() calls with a flag check.



git-svn-id: https://source.sakaiproject.org/svn/basiclti/trunk@308965 66ffb92e-73f9-0310-93c1-f5514f145a0a
SAK-24069

Introduce a session timeout property for LTI launches: 

basiclti.launch.session.timeout=10800 

The default is 10800 - setting this to 0 means that the session timeout will be 
not be adjusted at the time of an LTI launch. 



git-svn-id: https://source.sakaiproject.org/svn/basiclti/trunk@308966 66ffb92e-73f9-0310-93c1-f5514f145a0a