[SA 2020-001] Security flaws in CSRF prevension (#886)

WWSympa: Bug: Accessing to /sympa/help may crash

Update test suite

  - Renamed some test files for consistency.
  - All tests under t/ were made available on Travis-CI & GitLab CI.

Data source: File: gecos was ignored

Unable to sort column in subscriber list (#866)

Adding tests for #868

Addition to #840

Unreasonable error message to notify broken signature with PGP/MIME messages

Urlize mode bug fixes

Fixed by correcting query.

Unreasonable error message to notify broken signature in the message, if the messages signed with PGP/MIME was posted.

Deprecate one time ticket (2) (#156)

In some cases, a message will start with a multipart/related including a multipart/alternative; In that case, with the current code the multipart/related was urlized as a 'msg.0.bin' attachment, which was wrong.
Fixing this behaviour by:
1- allowing to go down two levels of multiparts
2- preventing any urlization if the part is not included in a 'multipart/mixed' parent to prevent urlizing the content of multipart/related or multipart/alternative.

Deprecate one time ticket (1) (#156)

Prevent welcome emails on import with --quiet.

Following suggestion by reviewer @ikedas: Replacing 'get()' by 'mime_attr()' and, therefore, a regular expression by 'eq'.

family_signoff action no longer does use one-time ticket.