[Issue #524] Creating a Request Handler for adding a list admin, either editor or owner. Used only in a test file. The aim of this commit is to validate I'm using Request::Handler the right way.

Updating source texts according to fixes on en_US catalog

WWSympa: Clicking "delete" button without selection introduces empty page.

WWSympa: Owners/moderators in list panel aren't updated

Fixed by getting recent owners/moderators passing cache.

Maintenance support scripts

Owner page is empty

Mail command unavailable in confirmation requests

Fix #300 — Allow to delete your own account

Invalid default scenarios: Follow up to #528

Inconsistent location of messge footer/header files #507

Issue with the message sent to owners to allow unsubscribing #469

Copying timestamp of original css.tt2 confuses browser cache.  Older timestamp of css.tt2 should be avoided by measures in release and install process.

Fixed by typos not loading information soon.

[bug] If a list parameter had a value "default", default value (if defined) was used instead of the value itself.
Fixed by removing a code replacing value "default". Exception is the case of scenarios: For compatibility, special value "default" will stand for default scenario name.

[change] Like the other parameters, defaults of list scenarios would be specified by corresponding robot/site parameters, instead of creating file or link named "*.default".
Defaults by older manner will be detected and written in sympa.conf/robot.conf during upgrading process.

Fix was taken from
https://git.wiki.kernel.org/index.php?title=ExampleScripts&action=history
at 17:16, 5 October 2012 (oldid=18471) by Nihen.

  - correct_msgid
  - git-set-file-times (taken from repo of rsync on samba.org)

Fix src/lib/Makefile.am (missing Sympa/Tools/Domains.pm)

Only from web interface for now.