Initialer Commit: Kundenverwaltung (PHP/Smarty)

Bestehende Codebasis als Ausgangsstand aufgenommen.

- .gitignore: Kundendaten (uploads_*), Smarty-Compile-Cache
  (templates_c), Laufzeit-Temp und Datenbank-Dumps ausgeschlossen;
  Verzeichnisstruktur ueber .gitkeep erhalten
- .gitattributes: Zeilenenden normalisiert (LF im Repo),
  Binaerformate markiert
- db-backup.php: MySQL-Zugangsdaten kommen jetzt wie im Rest der
  Anwendung aus der externen Konfiguration statt hartkodiert aus der
  Datei; Passwort wird ueber eine temporaere Optionsdatei statt per
  Kommandozeile uebergeben, Fehler von mysqldump/gzip werden gemeldet,
  Aufraeumen aelterer Backups berechnet Jahr und Monat konsistent

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>

incs/tcpdf/fonts/ae_fonts_2.0/README

@@ -0,0 +1,58 @@
+This project aims at increasing the number of available Arabic free and
+open source fonts. The goals of this project are,
+
+ * Create and/or salvage high quality free and open TTF Arabic fonts.
+
+ * Create a central repository of all free and open source Arabic fonts
+(TTF and otherwise) in order to get them included into the various
+distributions.
+
+ * To better couple and artistically match Arabic fonts to their latin
+counterparts.
+
+You can visit our web page
+http://www.arabeyes.org/project.php?proj=Khotot
+
+This software package/product and attached documentations are provided
+"as is", with no warranty.
+
+                     -* www.arabeyes.org *-
+
+If you'd like to help the Arabeyes Project, then consider:
+
+  http://www.arabeyes.org/donate.php
+
+Typeface and data © 2003-2007, Arabeyes.org.
+
+Latin glyphs (U+0021-U+007E, U+00A1-U+0237, U+1E00-U+1EF9 and
+U+FB00-U+FB06 Unicode ranges) are based on "Free UCS Outline Fonts",
+www.nongnu.org/freefont (Copyleft 2002, 2003, 2005 Free Software
+Foundation).
+
+These fonts are subject to the GNU GENERAL PUBLIC (GPL) LICENSE (Version 2).
+See COPYING for details or http://www.gnu.org/copyleft/gpl.html
+
+As a special exception, if you create a document which uses this
+font, and embed this font or unaltered portions of this font into the
+document, this font does not by itself cause the resulting document to
+be covered by the GNU General Public License. This exception does not
+however invalidate any other reasons why the document might be covered
+by the GNU General Public License. If you modify this font, you may
+extend this exception to your version of the font, but you are not
+obligated to do so. If you do not wish to do so, delete this exception
+statement from your version.
+
+Release Notes
+-------------
+2.0
+This the second major release of Arabeyes fonts, this release features:
+  * Completely new Latin Glyphs, based on font distributed by FreeFonts project
+    (See the legal notes above)
+  * Proper support for Arabic diacritics; all fonts now have anchor points
+    adjusted manually to fit nicely with each glyph.
+  * Diacritics for AlMothnna, AlArabiya and Tholoth fonts have been redisigned
+    too look better and fit with the style of the font.
+  * We dropped ae_ prefix from all fonts, so please fix your configuration
+    files.
+  * Various other small fixes, see ChangeLog file for details.
+