fixed label display bugs

Change-Id: Ifa4b52e93fc81a17cae6919e6e4aa9a9c63bc753
delaying callbacks during bulk update

Change-Id: I737baf626d8a971c4eed9808a0c20f8832172549
fixed bug where axes would not display properly when no data was
selected.

Change-Id: I98d7ee7ed6e62104669465385636ae13d2866934