Updating login/logout button to remove icon.
Updating login/logout button to remove icon.

csdl/makahiki,jtakayama/ics691-setupbooster,csdl/makahiki,yongwen/makahiki,jtakayama/ics691-setupbooster,csdl/makahiki,jtakayama/makahiki-draft,jtakayama/ics691-setupbooster,jtakayama/makahiki-draft,yongwen/makahiki,csdl/makahiki,jtakayama/makahiki-draft,yongwen/makahiki,yongwen/makahiki,justinslee/Wai-Not-Makahiki,jtakayama/makahiki-draft