[FIX] web: don't trigger remove then add the record to re-order list view

To re-order the list view remove the record and add the same record after.
(If an onchange is called, the user can have a message to avoid remove a one2many item)
Add an silent option on remove function of collection, the trigger is already call when write the sequence.

addons/web/static/src/js/views/list_common.js

@@ -270,9 +270,10 @@ var Collection = Class.extend(/** @lends Collection# */{
      * Removes the provided record from the collection
      *
      * @param {Record} record
+     * @param {Boolean} [options.silent=false]
      * @returns this
      */
-    remove: function (record) {
+    remove: function (record, options) {
         var index = this.indexOf(record);
         if (index === -1) {
             _(this._proxies).each(function (proxy) {
@@ -285,7 +286,9 @@ var Collection = Class.extend(/** @lends Collection# */{
         this.records.splice(index, 1);
         delete this._byId[record.get('id')];
         this.length--;
-        this.trigger('remove', record, this);
+        if (!options || !options.silent) {
+            this.trigger('remove', record, this);
+        }
         return this;
     },
 

addons/web/static/src/js/views/list_view.js

@@ -1633,9 +1633,9 @@ ListView.Groups = Class.extend( /** @lends instance.web.ListView.Groups# */{
                     return;
                 }
 
-                list.records.remove(to_move);
+                list.records.remove(to_move, {silent: true});
                 var to = target_id ? list.records.indexOf(target) + 1 : 0;
-                list.records.add(to_move, { at: to });
+                list.records.add(to_move, { at: to, silent: true });
 
                 // resequencing time!
                 var record, index = to,