#2532775 - Fixed issue where disabled buttons were still enabled
4 new Button tests and general cleanup
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#2532972 - Added hidden style for button
Button test for show/hide
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Added documentation for non-standard implementation
Tweaked buttons tests and modules to get 100% coverage
Tweaked Button units tests.
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Added commentary for a button unit test
Merge branch 'button-hide' into merge_button
Merge branch 'button100' into merge_button
Resolved merge
Lint cleanup
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