added edit button to entries

src/baby_monitor/static/sleep.html

@@ -1104,6 +1104,9 @@
               </div>
               <div class="sleep-duration">${durationText}</div>
             </div>
+            <div class="sleep-actions">
+              <button class="edit-button" onclick="window.location.href='/log-sleep.html?id=${sleep.id}'">Edit</button>
+            </div>
           </div>
         `;
       }