Consider disabling the Enigmail wizard on first start

I find the current opening of Icedove a bit rough:

• The Icedove wizard appears.
• It’s then shutoff by TorBirdy with a warning that bring you back to the main account settings interface. Ok, that’s tracked by #6154 (closed).
• But underneath there’s the Enigmail setup wizard that you’re faced with after setting up your account.

I propose to disable the Enigmail setup wizard and here is why.

Everybody starting Icedove wants an email account set up, so the Icedove wizard makes perfect sense. Now, the Enigmail wizard is only relevant for people already knowledgeable about OpenPGP. It’s opening sentences are probably confusing for people who don’t know what Enigmail is good for:

Welcome to the Enigmail Setup Wizard
This wizard helps you to start using Enigmail right away. Over the next few screens we'll ask you some questions to get everything setup.

This sounds like Enigmail is needed for the proper functioning of Icedove in Tails which is not the case if you don’t know or don’t care about OpenPGP.

On the other hand, I can understand why and how this wizard makes sense for people installing Enigmail outside of Tails as they are clearly interested about that.

I propose to instead document how to run the setup wizard from the menu in the Icedove documentation Menu → Enigmail → Setup Wizard.

Parent Task: #5663 (closed)

Related issues

• Related to #15658

Original created by @sajolida on 10436 (Redmine)