Pie menu priority order

Higher priority interactions will show up first on the pie menu.
Interactions with the same priority will be alphabetical. This will
not override the content_score for socials. Socials with a high
score will still show on the top-most page of the pie menu. It's
suggested that you start with lower numbers instead of
automatically tuning something to a 10 just to make it show up on
the first page.