Updated sketch tests.
Merge branch 'upstream/master'
activitymanager and interactives library prototype
Merge remote-tracking branch 'upstream/master' into seann
SelectOneQuestion work

* eventManager is required
* added submitButton member
* added event id for submit requested
* added handlers for choice selection and submit button being pressed
* draw has a preliminary implementation

now the Button widget needs work to support the requirements of the SelectOneQuestion
Merge pull request #49 from seannives/seann

Seann
Merge pull request #45 from jvish/review

Updated sketch tests.
Merge pull request #50 from mlippert/widget-refactor

SelectOneQuestion work