fix issue #3 of whitespace mishandling

whitespaces are now escaped with quotes
in the shell command that builds the PDF
Enable section numbering.
Fix chair name.
Add reviewers list
Add A Gramfort affiliation.
Add affiliation for V. Haenel.
Add affiliation for F. Alted.
Add Andy R. Terrel as reviewer.
Change date format.
Set default tablewidth to 0.8 linewidth.
corrected typos and improved some formulations
Update affiliation.
Change copyright year to 2014.
Add preparation for arxiv submission.
Introduction of "copyright_year" configuration option for the proceedings.
Add arxiv submission helper.
Fix copyright year in articles.
Minor edit.
Consistent naming of the proceedings.
Include arXiv identifiers in arxiv preparation.

Identifiers are declared in the file "arxiv.json" in the papers directories.