Software Heritage IDs (SWHIDs) now printed in PDF

Until now, the SWHIDs were not accessible in the print version of the
paper, they were only hidden as hyper-links within the PDF for readers to
click on. This is not a robust way to use the fruits of Software Heritage
and was kindly highlighted by Roberto Di Cosmo (principle investigator of
Software Heritage) after a first look at the paper.

With this commit, following the recommendation of Roberto, all the URLs are
corrected to print the raw SWHID as a footnote (for example
'swh:1:dir:...', for directories, or 'swh:1:cnt:...', for
contents/files). The click-able link of the SWHID also contains the context
(for example "origin" and etc).

In the process I noticed that the paper submission/acceptance info was not
filled and was also a footnote (which would not be seen if not cited). So
this information (received, accepted and published on IEEE) is now taken
just under the author list on the first page heading.

0 files changed, 0 insertions, 0 deletions