Sort handler on state & priority 'weight'

One thing to get in quickly before the stable release.

The user needs to be able to sort by state... but not alphabetically, but by the 'support_states.weight' column. (That's exactly what such a column is there for.)

This really is only suitable for sorting IMHO... so I doubted if I'd even make a 'field' for it. (I purposely did not add 'argument' / 'filter'.)
On the other hand, now a views builder can experiment with showing the value / click sorting, to see what it does.
So I included it anyway.

(Hunk #2/#3 in the patch are the few places where -I believe- the spacing was not corrected yet. If they were corrected: please ignore; they are irrelevant to this issue.)