Added column descriptions for the major tables, which can be used in future to build an MS from scratch.
Added column descriptions for the major tables, which can be used in future to build an MS from scratch.

git-svn-id: 88c9ca70625627825018ef89be83f0d41a8e4cf1@9405 b56c7a7d-ac47-0410-a905-b6f7de78896a

ska-sa/katdal