Stable release v1.42.0

New fixes in 1.42.0:

• mse264171: SE new blog: Broken link on 'serverfault.com' and 'superuser.com' under 'TAGS' (SE blogs only)
• mse268584: When a user is deleted, OP highlighting is lost
• mso310158: Right to left marker in comment shouldn't cause the rest of the line to change

Removed fixes:

• mso308513: Styling issue on upvoted comments by diamond moderators (CSS)

Other changes:

• Don't even try to run late setup and normal script fixes unless jQuery is available; it won't work. Early (and mathjax) script fixes still run.
• Extended codegolf959 fix (reduce line height in code blocks) also to puzzling.SE.
• mse22372: Don't rewrite links to per-site metas (meta.*.stackexchange.com) to use HTTPS; they currently return a 403 Forbidden error.