SOC-3505: IE8: Don't show Space Menu portlet after editing page layout.

Problem analysis
	- Resize handler is registered to all elements of DOM in IE. When a component which does not contain Space Menu is triggered, the space menu becomes null.

Fix description:
	- In IE, only register onresize action on Space Menu's DOM
SOC-4114 [Space Member Management] Auto-complete suggestion should contain the full name when inviting users into space

Fix description:
* Add a list to contain user's full names to PeopleRestService.UserNameList.
* Return a list of full names along with usernames when calling /social/people/suggest.{format} with query parameter &typeOfRelation=user_to_invite.
* Use fullNames Array to build search result list.