feat: add Revolut profile tooltip and test link to UserSettingsForm

- Add tooltip under Revolut profile input explaining where to find the profile name
- Add test payment link that appears when profile name is valid (>5 chars)
- Reorder ViewLocationCard payment UI: QR code placeholder first, link below centered
- Replace hardcoded text with translation keys for better i18n support
- Add English and Croatian translations for test link and payment button

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

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

app/ui/ViewLocationCard.tsx

@@ -149,19 +149,18 @@ export const ViewLocationCard:FC<ViewLocationCardProps> = ({location, userSettin
                     userSettings?.enableRevolutPayment && tenantPaymentMethod === "revolut" ?
                     <>
                         <p className="max-w-[25em] ml-1 mt-1 mb-1">{t("payment-info-header")}</p>
-                        <p className="ml-1">
-                            To pay via Revolut, please click the following link:{' '}
+                        <label className="label p-2 grow bg-white border border-gray-300 rounded-box justify-center">
+                            ToDo: QR Code goes here
+                        </label>
+                        <p className="text-center mt-1 mb-3">
                             <Link
                                 href={`https://revolut.me/${userSettings.ownerRevolutProfileName?.replace('@', '')}?amount=${(monthlyExpense / 100).toFixed(2)}&currency=${userSettings.currency}}`}
                                 target="_blank"
                                 className="text-blue-600 underline"
                             >
-                                Pay with Revolut
+                                {t("revolut-link-text")}
                             </Link>
                         </p>
-                        <label className="label p-2 grow bg-white border border-gray-300 rounded-box justify-center">
-                            ToDo: QR Code goes here
-                        </label>
                     </>
                     : null
                 }