Maintain all tests

[Updownquark]

This task is designed to be closed and reopened as often as necessary. The goal is that all the test Quick files contained in the tests project should always be ready to work at any time on a stable commit.

This description should be updated when new tests become available, when they are fixed, or observed to be broken.

• [X] BorderLayoutTest
• [X] BorderTest
• [X] ButtonTest
• [ ] CounterTest Buttons have been commented out pending updates for changes to CounterModel
• [X] FirstTest
• [X] ImageTest
• [X] LightingTest
• [ ] PaintTest Super slow
• [ ] SpinnerTest Works ok, but there are layout and render issues with the arrows in the buttons
• [X] TextFieldTest
• [X] TextTest
• [X] TimerTest
• [X] ToggleButtonTest

[Updownquark]

• BorderTest looks horrible. The borders are nowhere near where they should be. Pretty sure it's a layout problem; most likely FlowLayout.
• ImageTest has artifacts--some places on the image look fine, but on others, animated pieces of the image stick around and don't get repainted.
• PaintTest is ultra slow. Many seconds may pass between dragging the mouse and seeing the different-color pixels.

[Updownquark]

TextTest: The rich-formatted text has a white background

• AbstractSelectableDocumentModel was changed such that it doesn't do the piping for the element's style into the document. SimpleDocumentModel was apparently updated to do its job right, but not rich.