Resolves CLIMATE-62 - Add checkbox for selecting regrid options.
Resolves CLIMATE-62 - Add checkbox for selecting regrid options.

- Adds a checkbox to each dataset's display area so the user can select
  which dataset they want to use for regridding. Currently there's no
  logic coded in to their functionality. More work will be done later so
  the user can only select a single (or no) datasets.

git-svn-id: https://svn.apache.org/repos/asf/incubator/climate/trunk@1487659 13f79535-47bb-0310-9956-ffa450edef68

Former-commit-id: e4f117d3c586818a8de81b0fa3df56e043be00b5
riverma/climate,pwcberry/climate,jarifibrahim/climate,jarifibrahim/climate,kwhitehall/climate,huikyole/climate,agoodm/climate,lewismc/climate,pwcberry/climate,Omkar20895/climate,kwhitehall/climate,riverma/climate,agoodm/climate,huikyole/climate,Omkar20895/climate,MBoustani/climate,MBoustani/climate,Omkar20895/climate,riverma/climate,jarifibrahim/climate,agoodm/climate,lewismc/climate,riverma/climate,Omkar20895/climate,pwcberry/climate,Omkar20895/climate,riverma/climate,MJJoyce/climate,apache/climate,agoodm/climate,apache/climate,huikyole/climate,kwhitehall/climate,huikyole/climate,jarifibrahim/climate,apache/climate,MBoustani/climate,lewismc/climate,MJJoyce/climate,MJJoyce/climate,pwcberry/climate,lewismc/climate,apache/climate,lewismc/climate,pwcberry/climate,MBoustani/climate,MBoustani/climate,kwhitehall/climate,MJJoyce/climate,MJJoyce/climate,huikyole/climate,apache/climate,jarifibrahim/climate,agoodm/climate