Taxonomy installation steps 2 and 3 are not needed

Installation instructions at http://taxonomy.forge.onehippo.org/cms-configuration.html steps 2 and 3 are not needed anymore.

An editor can go to her document type in the type editor and add the mixin 'Classifiable' there. Then the mixin "hippotaxonomy:classifiable" is added to the hipposysedit:nodetype and also hipposysedit:prototype section of the document type, and the "classifiable" frontend:plugin is added to the editor:templates of the doctype. No change is done in the cnd definition of the type (step 2 in the installation), no adding of the field to your editing template needed (step 3).

After this action, the taxonomy field is normally shown in the doctype it was added to. No need to follow steps 2 and 3 of the installation, and also no need for a namespace visitor (HIPPLUG-691) if you have an existing repository.