Changed CJDB coverage strings to be more "human readable". Kindof goes with CJDB4 updates, but it applies to current CJDB displays too.

Changed CJDB coverage strings to be more "human readable". Kindof goes
with CJDB4 updates, but it applies to current CJDB displays too. Reword
coverage strings. Main code rev. 1749 and 1750