Visual Preview of VPE is not refreshed when changes to CSS file are saved.

1. Import HTML 5 project from JBoss Central
2. Open index.html with JBoss HTML editor
3. Open Preview tab of VPE
4. Open related screen.css file edit .member-foot class background-color attribute and save
5. Open visual part of index.html in VPE

ERROR: Footer doesn't have updated Footer background color

7. Add some changes to source of index.html and save

ASSERT: Background color of footer is changed in visual part of VPE