Changed XHTML1 source generation

Now really removes all instances of @role and @aria-level when
generating XHTML 1
Changed previous recommendation header

Now Matches best practice according to W3C pubs.  Uses 'Recommendation'
instead of 'recommendation' and shows 'Previous Recommendation' if
status is REC and there was a previous REC.  These changes at the
request of Ivan Herman and backed up by evidence in a non-ReSpec
produced recent W3C Recommendation at
http://www.w3.org/TR/2013/REC-rdf-sparql-XMLres-20130321/
Fixed tests to recognize new header content.
make the ToC replace its anchor point when it's explicit
data-include now has options to replace and to fetch sync
v3.1.63
Merge branch 'release/v3.1.63' into develop
display Constructor extended attributes even where there is no other extended attribute — fixes #261
fix attribute removal in data-include, and drop section-refs while maintaining the functionality where it is already supported
remove section-refs
removed docs
Merge pull request #262 from dontcallmedom/issue261

display Constructor extended attributes even where there is no other ext...
Reset Latest header based upon feedback.
Merge remote branch 'upstream/develop' into develop
fix disappearing ToC bug
v3.1.64
Merge branch 'release/v3.1.64' into develop
enable showPreviousVersion while on note track
Merge pull request #253 from halindrome/develop

Changed XHTML1 source generation