Rewrote jQuery.html to focus more on shim configuration, plus also
showing a more advanced alternative to exclude jQuery from the built
product and load it from a CDN.
Added module name to the error text for "scripterror"
Updated jQuery.html to point to the new example repos.
Removed download link.
Merge pull request #725 from bguertin/master

Include module name in the error text for "scripterror"
Related to #725, shorten the error string a bit
Merge branch 'fix-jquery-documentation' of git://github.com/karlwestin/requirejs into pull719
some formatting fixes, link expansions for #719
Fixes #736, double errbacks were not called