Add markdown toolbar to node description editor

packages/node_modules/@node-red/nodes/core/core/80-function.html

@@ -17,7 +17,6 @@
         <label for="node-input-outputs"><i class="fa fa-random"></i> <span data-i18n="function.label.outputs"></span></label>
         <input id="node-input-outputs" style="width: 60px;" value="1">
     </div>
-    <div class="form-tips"><span data-i18n="function.tip"></span></div>
 </script>
 
 <script type="text/x-red" data-help-name="function">

packages/node_modules/@node-red/nodes/locales/en-US/messages.json

@@ -196,8 +196,7 @@
         "error": {
             "inputListener":"Cannot add listener to 'input' event within Function",
             "non-message-returned":"Function tried to send a message of type __type__"
-        },
-        "tip": "See the Info tab for help writing functions."
+        }
     },
     "template": {
         "template": "template",

packages/node_modules/@node-red/nodes/locales/ja/messages.json

@@ -196,8 +196,7 @@
         "error": {
             "inputListener": "コード内で'input'イベントのリスナを設定できません",
             "non-message-returned": "Functionノードが __type__ 型のメッセージ送信を試みました"
-        },
-        "tip": "コードの記述方法はノードの「情報」を参照してください。"
+        }
     },
     "template": {
         "template": "template",

packages/node_modules/@node-red/nodes/locales/zh-CN/messages.json

@@ -191,8 +191,7 @@
         "error": {
             "inputListener":"无法在函数中监听对'注入'事件",
             "non-message-returned":"函数节点尝试返回类型为 __type__ 的信息"
-        },
-        "tip": "可从信息页面查看更多关于如何编写函数的帮助"
+        }
     },
     "template": {
         "label": {