update-database.py: changed weird whitespacing
open-changesets-by-owner.py: display count in mediawiki/* and mediawiki/core

Added two columns for this, applied some magic dust to the SQL query.
open-changesets-by-owner.py: add links for each column

Remove the link from user name instead.
Merge pull request #6 from MatmaRex/open-changesets-by-owner

Various fixes by MatmaRex:

* update-database.py: minor whitespace adjustments
* open-changesets-by-owner.py: added two wikitable columns to show commits specific to mediawiki/core or mediawiki/* and linked the data within