Report on TaskSession associations

add TaskSession objects so when we report
on a session, we know what Task created it, if there
was a task
Merge branch 'master' into feature/task_sssoc/sessions

Conflicts:
	Gemfile
	Gemfile.lock
was missing a nil check
Merge pull request #1908 from dmaloney-r7/feature/task_sssoc/sessions

Specs and functional tests passing, PT #51076813