UI-Verbesserungen, PWA-Icons, Branding und Settings-Erweiterung

Invertiertes Logo für Admin-Navbar, neue PWA-Icons, Manifest-Updates,
Tailwind-Config-Extraktion, Farb-/Namenseinstellungen im Admin-Bereich
und diverse Layout-Optimierungen.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

lang/en/ui.php

@@ -99,6 +99,22 @@ return [
             'rueckraum_rechts' => 'RB',
             'kreislaeufer' => 'PV',
         ],
+        'finance_type' => [
+            'income' => 'Income',
+            'expense' => 'Expense',
+        ],
+        'finance_category' => [
+            'catering' => 'Catering',
+            'sponsoring' => 'Sponsoring',
+            'membership' => 'Membership Fees',
+            'tournament_fees' => 'Tournament Fees',
+            'equipment' => 'Equipment',
+            'transport' => 'Transport',
+            'venue_rental' => 'Venue Rental',
+            'training_material' => 'Training Material',
+            'events' => 'Events',
+            'other' => 'Other',
+        ],
     ],
     'locales' => [
         'de' => 'Deutsch',