Move rendering into private templates

Add an explicit template renderer with HTML views and partials for the app, bootstrap, package, and catalog pages. Move shared reporting setup into config/reporting.php and relocate stylesheet assets under css/.

private/views/partials/prompt-default-item.html

@@ -0,0 +1,17 @@
+<div class="prompt-list-item default-prompt-item">
+<button type="button"
+        class="prompt-select js-open-prompt"
+        data-kind="default"
+        data-id="{{id}}">
+<span class="prompt-name">{{name}}</span>
+<span class="prompt-subline">{{{metadata}}}</span>
+</button>
+
+<form method="post" action="/prompts?lang={{language_url}}&mode=personal">
+<input type="hidden" name="action" value="copy_default">
+<input type="hidden" name="default_id" value="{{id}}">
+<button type="submit">{{copy_label}}</button>
+</form>
+
+{{{admin_delete_html}}}
+</div>