Fix reference to current user in view. closes #150.
Cleaner if statement
Ensure form in top bar is same as on home, style top bar input
Handle just accessing the cropsearches controller
Make sure page redirects

### What?
Page wasn't redirecting anymore on add-crop href click.

### Why?

Bringing in  meant that URLs get high-jacked by Angular. Someone more familiar with Angular should probably do this 'properly'
Simplify Crop Index page, redirect to CropSearch, add params check
Looks like some duplicate work was done
That blasted end keyword
Merge pull request #153 from simonv3/update-guides

Series of bug fixes. closes #150.