Add basic search bar with typeahead

The search bar gets a list of podcast titles that match the passes
string. It needs styling, and it should like to the podcast's page.

I'd like to add searching for episodes of podcasts too.
Add navbar with search form.
Merge pull request #8 from epalace510/master

MInor changes and tweaks
Link search results to podcast's page
Merge branch 'search'
WIP: start touching up podcast design
Add description to podcast view
Removed linke to podcast in podcasts view
Changed `enqueued` to `is_enqueued`
Subscribing to new podcasts added.
Added unsubscribing and dynamic feedback
Merge branch 'podcast-redesign' of github.com:The-Apiary/buzz into podcast-redesign