refactor: improve email verification/unsubscribe UI and messaging

UI Improvements:
- Add spacing (mb-3) to card titles
- Increase heading font size (text-lg) for better hierarchy

Content Updates:
- Rebrand from "Evidencija Režija" to "rezije.app"
- Clarify success message: "subscribed to receive notifications"
- Improve opt-out description wording
- Fix Croatian grammar and phrasing
- Update unsubscribe page title for clarity

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude Sonnet 4.5 <noreply@anthropic.com>

web-app/messages/en.json

@@ -91,7 +91,7 @@
       "barcodes-found": "barcodes found",
       "barcode-singular": "barcode found",
       "print-button": "Print Barcodes",
-      "print-footer": "Generated on {date} • Evidencija Režija Print System",
+      "print-footer": "Generated on {date} • rezije.app Print System",
       "table-header-index": "#",
       "table-header-bill-info": "Bill Information",
       "table-header-barcode": "2D Barcode",
@@ -429,8 +429,8 @@
   "email-verify-page": {
     "title": "Verify Your Email Address",
     "about": {
-      "title": "About Evidencija Režija",
-      "description": "Evidencija Režija is a utility bills tracking application that helps landlords manage their properties and notify tenants about rent and utility bills."
+      "title": "About rezije.app",
+      "description": "rezije.app is a utility bills tracking application that helps landlords manage their properties and notify tenants about rent and utility bills."
     },
     "why": {
       "title": "Why did you receive this email?",
@@ -450,7 +450,7 @@
     },
     "success": {
       "title": "Email Verified!",
-      "message": "Your email address has been successfully verified. You will now receive notifications from your landlord."
+      "message": "Your email address has been successfully verified. You are now subscribed to receive notifications related to rent and/or utility bills."
     },
     "error": {
       "title": "Verification Failed",
@@ -460,8 +460,8 @@
   "email-unsubscribe-page": {
     "title": "Unsubscribe from Email Notifications",
     "about": {
-      "title": "About Evidencija Režija",
-      "description": "Evidencija Režija is a utility bills tracking application that helps landlords manage their properties and notify tenants about rent and utility bills."
+      "title": "About rezije.app",
+      "description": "rezije.app is a utility bills tracking application that helps landlords manage their properties and notify tenants about rent and utility bills."
     },
     "why": {
       "title": "Why are you receiving emails?",