Edit term path

Even in these Pathauto times, it is sometimes useful to set some term paths manually, so I think TM should let us see the existing term path and change it.

(Right now, to edit such paths one has to use Drupal's built-in taxonomy function, which I prefer not to use at all on sites that has TM installed (also an unnecessary extra thing to know for newbies).)

If Pathauto module is detected - TM should let us remove (or also enable/set) the "Automatic path" tick mark so that the term in question gets its path manually enforced.

(Incl. removing the manual override and set back to automatic to let Pathauto handle it; all done by checking/unchecking that checkbox.)