[1466] First stab at integrating improved Hydrometeor Classification
cursor readout functionality into Image Display in a general way.
Working, but implementation maybe not quite ideal yet
[1466] Force sampling mode to NEAREST_NEIGHBOR if translating data
values to a string
Merge remote-tracking branch 'upstream/master' into hydrometeor

Conflicts:
	src/ucar/unidata/data/DataSource.java
can't create a time series unles user selects at least two times [1246]
Obey user's side legend preference.
Merge remote-tracking branch 'upstream/master'
updating for the 4.1 release
Merge remote-tracking branch 'origin/master'
updated ncIdv to 4.3.19 - includes grib1 bug fix
post 4.1 release
Merge remote-tracking branch 'upstream/master'
skewt table fix
jindent
Only pop up user message if running in foreground [1246]
Merge remote-tracking branch 'upstream/master'
Use the most appropriate method to alert user [1246]
Merge pull request #42 from tommyjasmin/master

Make sure user selects at least two times before going ahead with creating Time Series Chart.

Tommy, Bob and I have gone round and round on this and it looks good.
Merge remote-tracking branch 'upstream/master'
Merge pull request #43 from jon4than/sidelegend_pref_fix

Obey user's side legend preference.
misc