hero header min-height, margin on alert, min-length before query

Adding a hero header to the min-height so that it doesn't look weird on a smaller screen (min-height 640px)
add the margin back in temporarily. closes #96
Cloak the select statement on page load, and show the selected crop
Fixing reference to search results query

Search results were not accessing 'q' correctly, which was nested within 'cropsearch'
Merge branch 'master' of https://github.com/FarmBot/OpenFarm into fix-search-results
Add test to search for plurals, respond to hound
Merge pull request #107 from simonv3/style-tiles

hero header min-height, margin on alert, min-length before query
Updated a file
Merge branch 'master' of https://github.com/FarmBot/OpenFarm into fix-search-results
Merge pull request #108 from FarmBot/fix-search-results

Fixing reference to search results query
Merge pull request #110 from simonv3/add-email-page

Add a mailing-list page
Add link to blog

close #103