Make list sortable

[evz]

When you're looking at the list view, things just kinda show up the way they show up. Let's come up with a sane default sort. Some ideas from the session:

• [ ] Distance from location put into the location box
• [ ] Alpha by name
• [ ] Sort by category type

[pjsier]

Is this just to set up a default sort(s) depending on what the filters are (category if no location, distance if location provided), or also to add the option to change what the list is sorted by?

[pjsier]

Default sorts are added in #53. Alphabetical by resource name if no location is selected, and distance from location if there is a location selected. We could do alphabetical by category and then name, but with the way categories are stored it was quicker to just do name for now