Show the alt/shift+click shortcuts to watch/hide threads in the catalog thread menu.

src/General/Index.coffee

@@ -146,14 +146,17 @@ Index =
       return if g.VIEW isnt 'index' or !Conf['JSON Navigation'] or !Conf['Menu'] or !Conf['Thread Hiding Link'] or g.BOARD.ID is 'f'
 
       Menu.menu.addEntry
-        el: $.el 'a', href: 'javascript:;'
+        el: $.el 'a',
+          href:      'javascript:;'
+          className: 'has-shortcut-text'
+        , <%= html('<span></span><span class="shortcut-text">Shift+click</span>') %>
         order: 20
         open: ({thread}) ->
           return false if Conf['Index Mode'] isnt 'catalog'
-          @el.textContent = if thread.isHidden
-            'Unhide thread'
+          @el.firstElementChild.textContent = if thread.isHidden
+            'Unhide'
           else
-            'Hide thread'
+            'Hide'
           $.off @el, 'click', @cb if @cb
           @cb = ->
             $.event 'CloseMenu'

src/Monitoring/ThreadWatcher.coffee

@@ -42,14 +42,17 @@ ThreadWatcher =
 
     if g.VIEW is 'index' and Conf['JSON Navigation'] and Conf['Menu'] and g.BOARD.ID isnt 'f'
       Menu.menu.addEntry
-        el: $.el 'a', href: 'javascript:;'
+        el: $.el 'a',
+          href:      'javascript:;'
+          className: 'has-shortcut-text'
+        , <%= html('<span></span><span class="shortcut-text">Alt+click</span>') %>
         order: 6
         open: ({thread}) ->
           return false if Conf['Index Mode'] isnt 'catalog'
-          @el.textContent = if ThreadWatcher.isWatched thread
-            'Unwatch thread'
+          @el.firstElementChild.textContent = if ThreadWatcher.isWatched thread
+            'Unwatch'
           else
-            'Watch thread'
+            'Watch'
           $.off @el, 'click', @cb if @cb
           @cb = ->
             $.event 'CloseMenu'

src/css/style.css

@@ -1703,6 +1703,16 @@ a:only-of-type > .remove {
   position: relative;
   top: 2px;
 }
+.entry.has-shortcut-text {
+  display: flex;
+  justify-content: space-between;
+  align-items: center;
+}
+.entry .shortcut-text {
+  opacity: 0.5;
+  font-size: 70%;
+  margin-left: 5px;
+}
 .has-submenu::after {
   content: "";
   border-left: .5em solid;