resolves issue #264; change language on campaign admin page.
resolves #258--adds country to project admin.
resolves #179; creating resized image copies on the Media model on save.
Merge pull request #180 from annalee/admin

Minor admin updates
updating remove_account_id migration to handle null overflows.
updating tests and test data to reflect current migrations.
Merge pull request #181 from annalee/migrationcleanup

Migrationcleanup
Merge branch 'master' of github.com:18F/peacecorps-site into imageprocessing