Streamlining vars for titles and descriptions

[cfoe]

How about equalizing tmpl_vars for title and description in all templates?

In *_edit.htm files (and the associated lang files) titles and descriptions are combined in <tmpl_var name="form_hint">
In *_list.htm titles are "list_head_txt" and descriptions are "list_desc_txt"

I would propose to change all sites to titles ="list_head_txt" and descriptions = "list_desc_txt"

If you give me the go-ahead I will do the work and commit it to SVN.