remove dimensions for the logo image

Conflicts:

	login-server/src/main/webapp/WEB-INF/jsp/access_confirmation.jsp
	login-server/src/main/webapp/WEB-INF/jsp/approvals.jsp
	login-server/src/main/webapp/WEB-INF/jsp/error.jsp
	login-server/src/main/webapp/WEB-INF/jsp/home.jsp
	login-server/src/main/webapp/WEB-INF/jsp/login.jsp

Signed-off-by: Filip Hanik <fhanik@gopivotal.com>