Review Pro email templates

[mlandauer]

Because we haven't checked that they all make sense for our context

[mlandauer]

Here are places to look:

• https://github.com/mysociety/alaveteli/tree/develop/app/views/alaveteli_pro/account_mailer
• https://github.com/mysociety/alaveteli/tree/develop/app/views/alaveteli_pro/embargo_mailer
• https://github.com/mysociety/alaveteli/tree/develop/app/views/alaveteli_pro/metrics_mailer
• https://github.com/mysociety/alaveteli/tree/develop/app/views/alaveteli_pro/subscription_mailer
• https://github.com/mysociety/alaveteli/tree/develop/app/views/alaveteli_pro/webhook_mailer

[katska]

The wording looks good to me. I don't see any issues from the perspective of UK > Aus or wording that looks odd. There are links out to stripe payment that I'll assume work, or that are tested elsewhere.

[mlandauer]

Looks done then