feat(auth): enhance user registration with names and improve UI

- Add first_name and last_name fields to User model with validations
- Configure Devise registrations controller to accept name parameters
- Update registration form with name fields and improved styling
- Replace Twitter Bootstrap pagination with custom Tailwind components
- Add French locale translations for pagination and models
- Update header styling with responsive design improvements
- Add EditorConfig for consistent code formatting
- Fix logout controller URL handling and improve JavaScript
- Update seed data and test fixtures with name attributes
- Add comprehensive model tests for name validations
- Add test.sh script for easier test execution

💘 Generated with Crush
Co-Authored-By: Crush <crush@charm.land>

app/views/kaminari/_gap.html.erb

@@ -0,0 +1,12 @@
+<%# Non-link tag that stands for skipped pages...
+  - available local variables
+    current_page:  a page object for the currently displayed page
+    total_pages:   total number of pages
+    per_page:      number of items to fetch per page
+    remote:        data-remote
+-%>
+<li>
+  <span class="px-3 py-2 text-sm font-medium text-gray-400 bg-transparent">
+    <%= t('views.pagination.truncate').html_safe %>
+  </span>
+</li>