Add quote and image icons to workshop log displays

[maebeale]

What is the goal of this PR and why is this important?

• Show at a glance which workshop logs have quotes or images attached
• Uses hollow teal Font Awesome icons (fa-regular fa-comment and fa-regular fa-image) consistent with the workshop log color theme

How did you approach the change?

• Added has_quotes? and has_gallery_images? methods to WorkshopLog
• Created a shared _content_icons partial rendered on all workshop log display views:
  • Person show cards (_workshop_log_card)
  • Date rows in grouped cards and standalone page (_workshop_log_date_row)
  • Admin index table (_index)
• Eager-loaded :quotable_item_quotes and :gallery_assets in controllers to avoid N+1 queries

UI Testing Checklist

• Person show page — workshop log cards show icons when log has quotes/images
• Person workshop logs standalone page — date rows show icons
• Workshop logs index (admin table) — date column shows icons

Anything else to add?

• Icons only render when a log actually has content, so logs without quotes/images are unchanged

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