Replace all codesite-based URLs with github-based URLs
Merge pull request #19 from alice/github

Replace all codesite-based URLs with github-based URLs
Fix and test parsing of number values; fix bug when getting contrast ratio properties where elements without a text node as first child were being ignored
Merge pull request #20 from alice/aria-attributes

Fix and test parsing of number values; fix bug when getting contrast rat...
Fix crash in MainRoleOnInappropriateElement test
Fix ControlsWithoutLabel bug (not checking for role=presentation) and MainRoleOnInappropriateElement bug (naively looking for text from content)
Merge branch 'master' of https://github.com/alice/accessibility-developer-tools

Conflicts:
	gen/axs_testing.js
	test/audits/bad-aria-attribute-value-test.js
	test/index.html