pidstore: template filters

* Add template filters for checking existing of a persistent identifier.

Signed-off-by: Lars Holm Nielsen <lars.holm.nielsen@cern.ch>
oauthclient: signup support

Signed-off-by: Lars Holm Nielsen <lars.holm.nielsen@cern.ch>
utils: no CRSF protection in testing

<* Removes CRSF form protection when during tests.

Signed-off-by: Lars Holm Nielsen <lars.holm.nielsen@cern.ch>
formatter: bfe_authors unicode error fix

* Fixes unicode cascading in bfe_authors, due to bfo.lang being
  in unicode.

Signed-off-by: Lars Holm Nielsen <lars.holm.nielsen@cern.ch>
legacy: not found error downgrade

* Downgrades "404: Not found" from error to warning in the logger.

Signed-off-by: Lars Holm Nielsen <lars.holm.nielsen@cern.ch>
deposit: text updates
oauthclient/accounts: fix me

Signed-off-by: Lars Holm Nielsen <lars.holm.nielsen@cern.ch>
deposit: bibupload priority decrease

* Decreases bibupload priority to try to prevent queue from
  stopping.

Signed-off-by: Lars Holm Nielsen <lars.holm.nielsen@cern.ch>
communities: upload priority removal

* Removes bibupload high priority on accept/reject actions.

Signed-off-by: Lars Holm Nielsen <lars.holm.nielsen@cern.ch>
formatter: DOI inclusion in BibTeX export

* Includes DOI in BibTeX export.

Signed-off-by: Lars Holm Nielsen <lars.holm.nielsen@cern.ch>