Support default jurisdictions and/or jurisdiction sets in the front end

[mlissner]

Another user has asked that we support jurisdictions better in the front end so that they can have default jurisdictions. They also asked that we have some system so they can save groups of jurisdictions for future use.

These are both great ideas. I think however this is done, we should try to avoid adding anything to the user preferences pages and instead accomplish it via the search UI. A couple ways that could be accomplished might be:

• Save the last set of jurisdiction filters a user has in place and just reapply those every time.
• Add a button to the jurisdiction modal or the sidebar that allows people to save the currently selected jurisdictions (and add a UI for people to apply previously saved jurisdiction sets).

This needs some design work before I can get to work on it. I imagine this is something competing offerings have sorted out, so it's probably worth at least taking a quick look at how this is done elsewhere.

[mlissner]

I think freelawproject/foresight#28 has more potential. Closing this old bug for that one.