LDEV-1916 making toolDBVersionScriptPath value optional for tool deployer for better compatibility with existing tools, since it isn't critical for tool deployment or operation
LDEV-1912 set session timeout programmatically according to lams' UserInactiveTimeout value via a servlet listener rather than hard coding to 120 mins (in some webapps, no session timeout was specified at all).
LDEV-1910 hibernate loses branch_activity_id value when association is uni-directional, make it bi-directional. Putting link in the top level Activity class rather than BranchingActivity because of new work for LDEV-1299 that will allow more types of Activities to be mapped to branch_activity_id in lams_branching_activity_entry