INTEG-268 [Unified Search] Answer icon is too small in Floating Suggestion

Fix description: update answer icon.
INTEG-263 [Unified Search] Can not show result if keyword contains character * at begin

Fix description:
- Escape keyword in quick search portlet
INTEG-181: XSS vulnerability on Quick Search box

Fix description:
	- Escape HTML script by XSSUtils implemented in COMMONS-312 before rendering