Fix TypeError: this.treebox is undefined treeView.js. Should fix issue 7786

Author: samitbadle

ide/main/src/content/selenium-ide-sidebar.xul

@@ -15,10 +15,10 @@ See the License for the specific language governing permissions and
 limitations under the License.
 -->
 
-<?xml-stylesheet href="chrome://global/skin" type="text/css"?>
 <?xml-stylesheet href="chrome://global/content/xul.css" type="text/css"?>
+<?xml-stylesheet href="chrome://browser/skin/browser.css" type="text/css"?>
 <?xml-stylesheet href="chrome://selenium-ide/skin/selenium-ide.css" type="text/css"?>
-<?xml-stylesheet href="chrome://selenium-ide-platform/skin/selenium-ide-platform.css" type="text/css"?>
+<?xml-stylesheet href="chrome://global/skin/" type="text/css"?>
 <?xul-overlay href="chrome://global/content/editMenuOverlay.xul"?>
 <?xul-overlay href="chrome://browser/content/baseMenuOverlay.xul"?>
 <?xul-overlay href="chrome://selenium-ide/content/selenium-ide-common.xul"?>

ide/main/src/content/selenium-ide.xul

@@ -15,10 +15,10 @@ See the License for the specific language governing permissions and
 limitations under the License.
 -->
 
-<?xml-stylesheet href="chrome://global/skin" type="text/css"?>
 <?xml-stylesheet href="chrome://global/content/xul.css" type="text/css"?>
+<?xml-stylesheet href="chrome://browser/skin/browser.css" type="text/css"?>
 <?xml-stylesheet href="chrome://selenium-ide/skin/selenium-ide.css" type="text/css"?>
-<?xml-stylesheet href="chrome://selenium-ide-platform/skin/selenium-ide-platform.css" type="text/css"?>
+<?xml-stylesheet href="chrome://global/skin/" type="text/css"?>
 <?xul-overlay href="chrome://global/content/editMenuOverlay.xul"?>
 <?xul-overlay href="chrome://browser/content/baseMenuOverlay.xul"?>
 <?xul-overlay href="chrome://selenium-ide/content/selenium-ide-common.xul"?>