[feladat @ 91] Fixing some language issues. Translations not working due to wrong file names, see r89 as well. Fixing two broken references in menu and list_zones.php.

[feladat @ 90] Fixing #1 ("password of user is shown in plain text when edited by admin").

[feladat @ 89] Fix documentation on i18n.

[feladat @ 88] Bugfix. When viewing the details of a slave zone, an error was shown if the ip addresses of it's master nameserver was set (instead of showing the error if there was none set. Reported: Maarten te Paske.

[feladat @ 87] Bugfix. With user level 5 or 10 and lots of zones without an owner, like slave zones that are inserted by a supermaster, the "list all zones" view was broken (not all zones shown, but "show page" and "show letters" were missing as well). Function zone_count matches zones and domains table, but users with level 5 or 10 are allowed to see zones without an entry in the zones table as well.

[feladat @ 86] Fixed a typo in the credits. Sorry Koert.

[feladat @ 85] The type of zone wasn't show to users with access level 1. If a user with access level 1 did have access to a slave zone the user did not see the IP of the master nameserver of that zone. Now the user will the IP address (readonly and only if one is set). Bugfix. If no master IP for a slave zone is given, a warning is shown regardless of the userlevel. Bugfix. Both the "add record" and "edit record" buttons in the "edit zone" screen is no longer available for users with level 1 for domains of type "slave". Bug report by Antonio Prado. Some PHP and HTML cleanup (removing of empty tags and unnecessary repeatings of calls to a single function).