Various tab indents converted to spaces

git-svn-id: http://textpattern.googlecode.com/svn/development/4.x@5838 2fea6a4d-a838-0410-917b-93a53c48e9d2
Add `.category` classname back into tables columns

Might be useful to theme authors in the same way `.name` and `.date` are able to be targeted.

git-svn-id: http://textpattern.googlecode.com/svn/development/4.x@5839 2fea6a4d-a838-0410-917b-93a53c48e9d2