Improve Views UX part 2: time_diff, fields, and storage optimization

[jjroelofs]

Summary

Follow-up to #23 (Improve Views UX). This PR adds additional view enhancements and storage optimization:

View improvements:

• Add hook_update_8003 for view enhancements
• Add analyzed_timestamp field with "time ago" format
• Add created field with time_diff enabled
• Enable time_diff on changed field (shows relative time like "2 days ago")
• Add content type exposed filter
• Change default sort from created to changed
• Standardize field ordering: title → sentiments_id → score → analyzed_timestamp → type → changed → created → uid
• Add user module dependency and user.permissions cache context
• Clean up filters and remember_roles

Storage optimization:

• Refactor SentimentsStorageService::saveScores() to use merge/upsert pattern
• Prevents duplicate records and race conditions
• More efficient than delete+insert approach

Test plan

• Run drush updb to apply update hook 8003
• Run drush cr to rebuild caches
• Verify "Last analyzed" shows relative time (e.g., "2 weeks ago")
• Verify "Last edited" and "Created" show relative time with tooltip
• Verify content type filter appears
• Verify field order matches expected
• Test analyzing same content twice - should update existing record, not create duplicate