[css3-text] editorial nits: index needs tidying

An index was recently added to CSS3 Text but the entries need to be
cleaned up to make the formatting of values consistent, remove
undefined backlinks ("??"), and assure that all important terms
are in the index, since there's *lots* of terminology used.

Also, I think the structure should be similar to other specs, with
Changes/References/Index/Property Index in sections separate from the
appendices.  This makes it easier for implementators to find important
normative information in places like Appendix F. 

Rough order followed in other specs:

  Appendices
  Changes
  Conformance
  References
  Index
  Property Index

Cheers,

John Daggett

Received on Thursday, 15 August 2013 14:17:13 UTC