Make 'site settings' admin page clearer

[denny]

Currently the description of each setting is in the table row under the inputs for changing it, and the table striping makes it less than obvious that they are related.

[denny]

If you are a less experienced developer who is looking at this issue and thinking you'd like to try to take it on but you're not entirely confident, I would be happy to help you - whether that's help getting set up, more explanation of what needs doing, pairing on the code task itself, or anything else I can do to help.

In my day job I'm a lead developer who often mentors less experienced developers, and I'd love to use some of that experience to help people take their first steps into contributing to open source projects.

[denny]

I'm currently investigating incorporating the Sail settings engine to manage the settings and feature flags, instead of the current hand-rolled approach, so this issue could become irrelevant in the medium term.