changes to syntax document from F2F session
various changes to metadata document
removed row/cell descriptions from schemas
removed json datatypes
added dialect description to metadata

I’ve renamed some of the flags in the model document so that they are
consistent with the CSV dialect description language at
http://dataprotocols.org/csv-dialect/, and incorporated all of those
properties in the dialect description even where it leads to some
repetition
added links to GitHub issues
linked to relevant GitHub issues
text/csv is already UTF-8 by default
added definition of metadata for groups of tables
added template specifications to the spec
removed additional constraints section

This was left over from copy/paste from JSON Table Schema
added section on foreign key references
added urlTemplate property

… to create a unique identifier for each row
constrain names of columns

… to make them easier to reference in URI templates
CSV2RDF, CSV2JSON: changed the issues' handling in respec.

See http://lists.w3.org/Archives/Public/public-csv-wg/2014Nov/0005.html for further details
Added further issue references to the rdf and json transformations
more description of how foreignKeys work
Syntax fixes to test manifest.
Set issueBase and use with data-number in metadata doc.
Security Considerations section template and issue #8 marker in metadata document.