EXOGTN-1769: [IE8]No user avatar in activity's comment.

Fix description
	- Update the style of avatar class for activity stream
EXOGTN-1399: Backport GTNPORTAL-3225 Height and width of Portlets are not updated after setting

Fix description:
  - Set the height and width after editing portlet
Merge commit 'b81e5fada8ff93955c6fc620619bb701f9a5289d' into HEAD