Add setting for log view word wrap default

[MetRonnie]

Partially addresses #1809

Simple addition of a checkbox in the settings page, as I am getting a bit fed up of always changing it. I thought about whether the word wrap toggle button itself should set the global default but I'm not 100% sure that is desirable.

Check List

• [x] I have read CONTRIBUTING.md and added my name as a Code Contributor.
• [x] Contains logically grouped changes (else tidy your branch by rebase).
• [x] Does not contain off-topic changes (use other PRs for other changes).
• [x] Tests are included
• [x] Changelog entry included if this is a change that can affect users
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