MOTECH-1133 CMS-Lite autocomplete suggestions not appearing

The list of autocomplete suggestions does not work correctly
by default in a Bootstrap modal. Fixed by setting a very high
z-index for the autocomplete ui's CSS rule.

Change-Id: Ia73e31f5d6a15e2f2feec107ffeb9863c8180dd1
Merge "MOTECH-1133 CMS-Lite autocomplete suggestions not appearing"