spanish translation fix

update english locale to accept arg

rm unnecessary code

add more fixes for ago
Merge pull request #722 from realdoug/master

Fix small spanish translation bug
Remove instances of redirect_to :back
Merge pull request #683 from loomio/feature/fix-errors-with-redirect-to

fix redirect-to
create mock email sender for use in testing ENV. set up email css, enhance some emails
remove mysterious config file from stylesheets
Merge pull request #693 from loomio/feature/markdown_in_mention_emails

Feature/markdown in mention emails (plus email test suite)