Fixed typo. More comments.
Updated license.
Chosen BSD license made explicit.
Fixed inconsistency in license (between LICENSE.txt [3 clause] and the documentation link [2 clause]).
Removed the call for projects using uncertainties (no feedback received on this).
Updated web address of doc.
More information added about updater.
Merge branch 'release' into release_python2.3
Merge branch 'release_python2.3' into master_python2.3