Fix OpenGraph tags

[ArtOfCode-]

Closes #1391.

Adds missing og tags and fixes the broken og:image tags.

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 56.35%. Comparing base (2e74190) to head (afaa022).
Report is 3 commits behind head on develop.

Additional details and impacted files

Components	Coverage Δ
controllers	59.24% <ø> (ø)
helpers	61.95% <ø> (ø)
jobs	28.00% <ø> (ø)
models	57.17% <ø> (ø)

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[cellio]

LGTM.