SVG 2 has un-used references

[nikosandronikos]

At least CSS3ANIMATIONS and CSS3TRANSITIONS are not referenced anywhere in SVG 2.

Need to go through and tidy up the references before CR.

[dstorey]

Some I've noticed:

• AbstractView. This is no longer in DOM and only used specs/animations
• DocumentCSS: Not in DOM/CSSOM. Can't see it referenced anywhere
• CSSPrimitiveValue: Not in DOM/CSSOM. Can't see it referenced anywhere
• RGBColor: Not in DOM/CSSOM. Can't see it referenced anywhere
• ViewCSS: Not in DOM/CSSOM. Can't see it referenced anywhere

Needs a wider sweep for things that still exist in the web platform but are not referenced. DOMTokenList looks like it may be one now we defer to HTML for relList for example

There are also various definitions that link to specific versions of specs and a bug red "This version is outdated!" banner is displayed in the centre of the screen. https://www.w3.org/TR/2012/WD-css3-values-20120308/#angles for example. We probably want to update them to the dateless CR or the latest ED drafts.

[dirkschulze]

This needs another round of review.

[svgeesus]

Assigned myself; will do another round of references checking and updating to latest versions.