Remove icons from page title bars and fix Features page issues

- Remove icons from all page title sections in tab bars
- Fix double padding on mobile for Features page
- Fix drag state not resetting when Apply/Cancel pressed

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

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

frontend/src/pages/admin/Features.tsx

@@ -245,12 +245,14 @@ export default function Features() {
         } catch (error) {
             console.error('Failed to save order:', error);
         } finally {
+            setDraggedItem(null); // Reset drag state
             isUserEditing.current = false;
             setHasOrderChanges(false);
         }
     };
 
     const handleCancelOrder = () => {
+        setDraggedItem(null); // Reset drag state
         isUserEditing.current = false; // Done editing
         setLocalOrder(moduleOrder);
         // Reset positions from moduleStates
@@ -470,7 +472,6 @@ export default function Features() {
                         <span className="material-symbols-outlined">menu</span>
                     </button>
                     <div className="page-title-section">
-                        <span className="material-symbols-outlined">extension</span>
                         <span className="page-title-text">{t.featuresPage.title}</span>
                     </div>
                     <div className="page-tabs-divider"></div>