Merge branch 'hotfix/widget_clean' into 'master'

Merge of hotfix/widget_clean 修复部件刷新可能的问题 to master

See merge request o2oa/o2oa!625

o2web/source/x_component_process_Xform/Widget.js

@@ -41,6 +41,8 @@ MWF.xApplication.process.Xform.Widget = MWF.APPWidget =  new Class(
     },
     clean: function(){
         (this.modules || []).each(function(module){
+            if (this.form.all[module.json.id]) delete this.form.all[module.json.id];
+            if (this.form.forms[module.json.id])delete this.form.forms[module.json.id];
             this.form.modules.erase(module);
         }.bind(this));