WWSympa: edit_list: Now inclusion will no longer be updated immediately, even if parameters on data sources were changed.
Instead, a message telling that inclusion will be updated soon (in an hour or so) is shown.

family_signoff action no longer does use one-time ticket.

- Attachment with long filename can break list archives
- Only us-ascii will be treated as-is.

WWSympa: edit_list: Use 'Apply modifications' instead of 'Update' to make sure the changes/deletions will be effective only if update is performed.

WWSympa: editsubscriber/review/set: Use 'Apply modifications' instead of 'Update' to make sure the changes/deletion will be effective only if update is performed.

WWSympa: edit: Use 'Apply modifications' instead of 'Update' to make sure the changes/deletion will be effective only if update is performed.

Fix #634

Fix #636

Fix #622
Thx to dpc22 who created the issue AND gave the solution

- Currently, only light export is available, thus export doesn’t contain
  the name of the subscribers. The button solves that.
- The full export always includes a header:
  # Exported subscribers with search filter ""
  But it’s useless and maybe confusing when you use the full export from
  the button. I removed that header if no filter was sent.

Note: Message catalog should be tweaked.

Note: Message catalog should be tweaked.

- 4 spaces indentation
- Indent on HTML tags AND on TT2 stuff ([% IF … %])
- Avoid HTML or TT2 oneliners like:
```
  [% IF top_menu %]…[% END %]
  <div class="displayNone"><a href="#top">Top of Page</a></div>
```
- When a tag has too many attributes to be on one line, indent the
  attributes at the same level than the first one:
```
<label class="foo"
       id="bar">
    Baz
</label>
```

Updating source texts according to fixes on en_US catalog

  - Use "[% string | loc %]" instead of "[%|loc%]string[%END%]".
  - Use a filter "mailbox".

Updating source texts according to fixes on en_US catalog