Null is explicitly disallowed in most field constructors. Thus the random results of passing null are undefined and may change. These changes should not be tested against.
Exceptions: Variable and serializable lable fields acually do take null.
This commit is due to the upcoming parseInt->Number commit which happens to change how null behaves.
Also added missing ‘empty’ test for checkboxes.
* Added field value tests.
* Fixed field image src param.
* Fixed falsy values with label fields.
* Fixed falsy values with text input fields.
* Fixed some angle field tests.
* Fixed other text input when editing tests.
* Fixed colour tests.
* Cleaned up some number and variable field tests.
* Added angle field > 360 degrees tests.
* Fixed variable validator tests.
* Split setValue tests into sub-suites.
* Fixed angle >360 tests
* Changed var declarations to property declarations.
