Make adding a website optional

Helmorequested to merge
helmo/module-wizard:webtoggle into master

I had the usecase to create a domain for mail and DNS while the site is hosted externally.

This diff is a bit hard to read due to all the indentation changes, but it's easier when viewing the individual commits. For 080d42912c9d3c9645ec862f0c61ce4c593dce6a you can use the 'Hide whitespace changes' button to see that it adds no code changes. The relevang changes are in 9d3131dfeb16e536c1410e85ce9382082062ac1d

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