Add translations for project templates and navigation to settings

Introduce new translations for project template creation and editing, and add a button to navigate back to the settings page from the ProjectTemplate component.

Replit-Commit-Author: Agent
Replit-Commit-Session-Id: ceced2fc-aa46-458d-ba87-ddd4b7bb1518
Replit-Commit-Checkpoint-Type: intermediate_checkpoint
Replit-Commit-Screenshot-Url: https://storage.googleapis.com/screenshot-production-us-central1/659922a9-0087-461c-90dd-6d9a58b81d4d/ceced2fc-aa46-458d-ba87-ddd4b7bb1518/LNMKOrA

client/src/App.tsx

@@ -344,6 +344,7 @@ function App() {
           <ProjectTemplate 
             onCreateFromTemplate={handleCreateFromTemplate}
             onCreateTasks={(newTasks) => setTasks(prev => [...prev, ...newTasks])}
+            onNavigateToSettings={() => setCurrentTab('settings')}
           />
         );