This applies a lot of formatting fixes on the language files:

1. In EOF - trimmed all empty lines except one
2. After the title - one empty line strictly
3. Corrected links to national versions of documents in dokuwiki.org if
   they exits - 4example [[doku>namespaces]] to [[doku>ar:namespaces]]
4. Corrected some over-auto-translated links to "playground:playground"
   and "wiki:syntax"
5. Torn lines are collected in one in a large number of places (except
   for RTL languages)
6. Removed e-mail signatures that now is missing in the English set of
   files

Default only text string exists, via localized translation a wiki admin
can add his/her own (html) version.

Done:
Cleanup of the mail text signature.
The signature is deleted from the txt files and moved in to lang.php
Mailer.class.php updated to insert the signature

Fix:
- Cleaner text
- no more "-- "  "--" "---" "----" problems.
- mailwrap.html is not needed anymore an can be deleted (?)

Changed files in all languages:
lang.php
mailtext.txt
password.txt
registermail.txt
subscr_digest.txt
subscr_list.txt
subscr_single.txt
uploadmail.txt
pwconfirm.txt
showrev.txt

delete?:
mailwrap.html

This reverts commit 524df576.

Conflicts:
	inc/lang/bn/lang.php
	inc/lang/fr/lang.php

this has been done by a script and might not be 100% accurate