Set preview_seed on parent node when file is modified, should fix #1213

Author: cdujeu

core/src/plugins/editor.pixlr/class.PixlrEditor.js

@@ -58,7 +58,7 @@ Class.create("PixlrEditor", AbstractEditor, {
             }else if(this.editorOptions.context.__className == "AjxpTabulator"){
                 this.editorOptions.context.closeTab("editor.pixlr:/" + this.currentNode.getPath());
             }
-			pydio.getController().fireAction('refresh');
+            pydio.fireNodeRefresh(this.currentNode);
 		}.bind(this);
 		conn.sendAsync();
 	},

core/src/plugins/editor.zoho/class.ZohoEditor.js

@@ -41,7 +41,8 @@ Class.create("ZohoEditor", AbstractEditor, {
             conn.addParameter("get_action", "retrieve_from_zohoagent");
             conn.onComplete = function(transport){
                 if(transport.responseText == "MODIFIED"){
-                    ajaxplorer.fireNodeRefresh(this.currentNode);// fireContextRefresh();
+                    this.currentNode.getParent().getMetadata().set('preview_seed', Math.round(date.getTime()*Math.random()));
+                    pydio.fireNodeRefresh(this.currentNode);
                 }
             }.bind(this);
             conn.sendAsync();