Upgrade to typeahead.js 0.10.1.  Closes #120

This brings a few niceties:

We can access the typeahead datums directly, instead of getting
them through an undocumented .data() object

The option to tokenize client-side instead of server-side

The ability to sort suggestion results
Upgrade to azavea typehaead fork.

Adds back in showing default suggestions on focus if
minLength is 0
Sort boundary list results in order of importance
Change sort order of zip codes so they are lowest in the list

Fixes #1090
Merge pull request #1141 from maurizi/topic/1090/prioritize-boundaries

Prioritize custom boundaries over zip codes