Update screenshots for "Delete Server" button

[pljones]

Documentation updates are required for

• https://github.com/jamulussoftware/jamulus/pull/3159
• https://github.com/jamulussoftware/jamulus/pull/3260
• https://github.com/jamulussoftware/jamulus/pull/3305

which relate to the addition of a "delete current entry" button to the Client dialogs Connect and Advanced Settings.

The amended English (primary) documentation should have replaced screenshots and any accompanying text changes that are required.

Weblate authors should, once these changes are available, make the required changes to the translations as usual (outside this issue).

[ann0see]

Screenshot of connection setup window

Screenshot of advanced setup

I hope these are the only screenshots which need to be changed

[ann0see]

Screenshots added for this. Doc changes may still be outstanding.

[ignotus666]

Adding screenshots in ES here to create links:

[pljones]

I'm going to take the opportunity to reword the text a bit. Currently, how to actually connect has got a bit hidden in the depths.

1007 opened -- I'm waiting for GitHub to do the build as I couldn't get it working on my fork.

[ann0see]

@pljones I think this is done