Include contract signed as a closed milestone

resolves #323
Widen test dates a little to cope at end of calendar year
Merge pull request #324 from theodi/closed-opportunities

Closed opportunities
automatically updated dependencies
Merge pull request #325 from theodi/update-dependencies-2014-01-08

automatically updated dependencies
automatically updated dependencies
Fix time-dependent test
Merge pull request #326 from theodi/update-dependencies-2014-01-15

automatically updated dependencies
automatically updated dependencies
Merge pull request #329 from theodi/update-dependencies-2014-01-22

automatically updated dependencies
Merge branch 'refs/heads/master' into google_drive_spreadsheets

Conflicts:
	Gemfile.lock