Replaces #697

From the original:

Fixes #628

Replaces #674

@Skud :
> I think after you select something from that search UI it should take you direct to the crop page in question (eg. /crops/eggplant) not to search results (unless there's not an exact match).

This should work in production where we're using Elasticsearch but it doesn't seem to work in development. See inline note.

@Skud :

Why is the crop search not an autosuggest? If I type "pea" or "berry" for instance I don't see the list.

Good call. I need to refactor autosuggest a bit. Should I do that now or break into a new story?

Question: Should the signed in user homepage redesign be part of this PR?

Screenshot (updated March 1, 2015)

Updated screenshot of homepage:

So... this is a bit more mergable, but I think its a bit less nice that the current logged in user homepage.

It might be better to redo this to mix in the map feature to the existing content or otherwise split into 'logged in experience' vs 'new user journey'

Coverage decreased (-1.02%) to 86.655% when pulling b9488a6 on CloCkWeRX:homepage-redesign-redux into 266455e on Growstuff:dev.

Coverage decreased (-1.02%) to 86.655% when pulling b9488a6 on CloCkWeRX:homepage-redesign-redux into 266455e on Growstuff:dev.

Lots of Missing template home/_blurb errors in CI: did you forget to add a file?

The merge was quite a pain, it was probably eaten at some point. Will restore in a bit

Coverage decreased (-1.1%) to 87.251% when pulling 27f3898 on CloCkWeRX:homepage-redesign-redux into 148dfa7 on Growstuff:dev.