Fixed copy on about page by removing test word 'now'
Added new pictures for about page.

Replaced image tag text in about.slim to "Al-1.png", "Todd-1.png" etc.
Added label "Main Picture" on new post page.
Changed copy on About page.

Put "We want to foster a more responsible and democratic food system."
in place of "A little about who we are..."
Added Client Side Validations Gem.
Merge branch frontend
merge branch emma