WIP: compose email in app rather than in mail app

When a user decides to send an email to OBA support popup and allow them to send the email rather than jumping to the mail app. Once completed the user will be returned to the OBA app.

Currently this PR will popup and allow the user to send the email but the compose window does not go away after selecting send or cancel. @aaronbrethorst, @Wizecoder any ideas?