Handle email delivery timeouts

[airblade]

An app using email confirmation ran into a problem when the email delivery gem (Postmark in this case) wasn't able to establish a connection to Postmark.

quo_vadis/lib/quo_vadis/controller.rb

Line 151 in 57a712c

QuoVadis.deliver :account_confirmation, {email: model.email, otp: otp}

quo_vadis/lib/quo_vadis.rb

Lines 85 to 86 in 57a712c

	mail.deliver_later :
	mail.deliver_now

The error:

A Postmark::TimeoutError occurred in people#create:

 Failed to open TCP connection to [api.postmarkapp.com:443](http://api.postmarkapp.com:443/) (execution expired)

We should catch this exception and log the error. Ideally we would notify the user in the UI.

Whether or not the user is notified in the UI, they will be able to press the "send me another confirmation email" button.