MINOR More robust path concat in HtmlEditorField.js (means it doesn't…

… break with translatable module enabled)

javascript/HtmlEditorField.js

@@ -730,14 +730,14 @@ ss.editorWrappers['default'] = ss.editorWrappers.tinyMCE;
 				return this.find('.ss-htmleditorfield-file[data-id=' + idOrUrl + ']');
 			},
 			showFileView: function(idOrUrl, successCallback) {
-				var self = this, params = (Number(idOrUrl) == idOrUrl) ? '?ID=' + idOrUrl : '?FileURL=' + idOrUrl,
+				var self = this, params = (Number(idOrUrl) == idOrUrl) ? {ID: idOrUrl} : {FileURL: idOrUrl},
 					item = $('<div class="ss-htmleditorfield-file" />');
 
 				item.addClass('loading');
 				this.find('.content-edit').append(item);
 				$.ajax({
 					// url: this.data('urlViewfile') + '?ID=' + id,
-					url: this.attr('action').replace(/MediaForm/, 'viewfile') + params,
+					url: $.path.addSearchParams(this.attr('action').replace(/MediaForm/, 'viewfile'), params),
 					success: function(html, status, xhr) {
 						var newItem = $(html);
 						item.replaceWith(newItem);