Updated documentation/coding standards and unit test for BundleMeasure in...

Updated documentation/coding standards and unit test for BundleMeasure in preparation for merging into trunk. Fixes #4077.

git-svn-id: http://subversion.wr.usgs.gov/repos/prog/isis3/branches/ipce@6913 41f8697f-d340-4b68-9986-7bafba869bb8