added code 302 redirect
Removes recently departed team members
Makes them "alums" instead of removing

- This is important if we want to continue attributing blog posts to them.
Reverting changes in last commit.
reremove stacy
Fixes open graph description

Currently almost every blog post gets "18F builds effective, user-centric
digital services focused on the interaction between government and the
people and businesses it serves" for the open graph description when
shared. (See:
http://www.google.com/webmasters/tools/richsnippets?q=https%3A%2F%2F18f.gsa.gov%2F2014%2F10%2F21%2Fhow-to-run-your-own-3-sprint-agile-workshop%2F,
for example). This happens when pages or posts are missing a description
value in the front-matter.

To address this I've added a second conditional that checks for a post or
page excerpt if the description is missing. This should make open graph
data more descriptive when shared.
fixup! Fixes open graph description
Merge pull request #344 from 18F/open_graph

Fixes open graph description
remove alum check
Merge branch 'staging' into staging-code-redir
Merge pull request #343 from 18F/departures

Removes recently departed team members
Merge pull request #303 from 18F/staging-code-redir

Add 302 Redirect for /code/<project> to https://github.com/18F/<project>
move /code redirect to production site

cc @seanherron
Merge pull request #347 from 18F/move-code-redir-to-production

move /code redirect to production site
Merge pull request #348 from 18F/staging

Deploy /code redirect, remove teammates, fix OG tags