added typeahead dependency
added unminified scripts for easier debugging
first stab at owner/repo search.

uses twitter typeahead. customizes logic to only use suggestions
when actually typing a user (designated by starting with an '@'),
or repo (a '/').

Use the elasticsearch autocomplete index. also use the complex
query once a repo/user has been selected.
Merge pull request #56 from dgreisen-cfpb/master

user/repo search