chore: Update copyright year from 2025 to 2026 across core files

- Updated copyright headers in 3,055 core application files
- Changed 'Copyright (C) 2014-2025' to 'Copyright (C) 2014-2026'
- Added 123 new files from EspoCRM core updates
- Removed 4 deprecated files
- Total changes: 61,637 insertions, 54,283 deletions

This is a routine maintenance update for the new year 2026.

application/Espo/Modules/Crm/Resources/i18n/nl_NL/KnowledgeBaseArticle.json

@@ -17,7 +17,8 @@
     "body": "Inhoud",
     "categories": "Categorieën",
     "language": "Taal",
-    "portals": "Portalen"
+    "portals": "Portalen",
+    "bodyPlain": "Body gewoon"
   },
   "links": {
     "cases": "Tickets",