Sync outstanding changes: beauty forms, config updates, gitignore

- Update beauty booking forms (en, hu, no)
- Update manage-booking view, worker calendar view
- Update config.php, google_calendar.php, GoogleCalendar library
- Add CLAUDE.md project instructions
- Add service-account-key.json to .gitignore
- Update ledigestilling page

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

.gitignore

@@ -16,6 +16,7 @@ user_guide_src/cilexer/build/*
 user_guide_src/cilexer/dist/*
 user_guide_src/cilexer/pycilexer.egg-info/*
 /vendor/
+application/config/service-account-key.json
 
 # IDE Files
 #-------------------------