Merge pull request #109 from ucsflibtopfstedt/rb2.2.1

bumped version number, updated changelog
tweaked session type color coding for the umpteenth time. refs #3288
updated changelog.
Merge pull request #112 from ucsflibtopfstedt/supp3288

changed session type colors once more.
Merge pull request #113 from ilios/rb2.2.1

reintegrate branch rb2.2.1