Adding Switch Node tests
Adding Change Node tests
Merge pull request #342 from zobalogh/change-node-tests

Adding Change Node tests
Merge pull request #336 from zobalogh/switch-test

Adding Switch Node tests
MQTT Node: allow publishing of Buffer payloads
Closes #341
Temporarily remove Mongo Update option
Part of #335
Merge remote-tracking branch 'upstream/master' into range-tests
Modifying example values in HTML form