Add a keybind for refreshing thread watcher

src/General/Config.coffee

@@ -857,6 +857,10 @@ Config =
       'r'
       'Update the thread / refresh the index.'
     ]
+    'Update thread watcher': [
+      'Shift+r'
+      'Manually refresh thread watcher.'
+    ]
     # Images
     'Expand image': [
       'Shift+e'

src/Miscellaneous/Keybinds.coffee

@@ -94,6 +94,8 @@ Keybinds =
       when Conf['Watch']
         return unless thread
         ThreadWatcher.toggle thread
+      when Conf['Update thread watcher']
+        ThreadWatcher.buttonFetchAll()
       # Images
       when Conf['Expand image']
         return unless ImageExpand.enabled and threadRoot