Convert the extension registry index to polyglot (X)HTML
polyglot + html conformance minor edits for extension template and source
Regenerate indexes and fix minor HTML conformance issue in WEBGL_shared_resources/extension.xml
Fix stray spaces
Merge removal of WEBGL_fbo_color_attachments
Merge branch 'master' of https://github.com/KhronosGroup/WebGL into polyglot-conform
Merge branch 'master' of https://github.com/KhronosGroup/WebGL into polyglot-conform
Merge pull request #147 from dsheets/polyglot-conform

(X)HTML Conformance