TryGhost/Ghost — pull request #4546 by PaulAdamDavis (2014-11-29 16:21:24+00:00)
Title: [WIP] Add a URL preview componant

Closes #4499

- Introduces a URL preview component
- Added the component to tag settings and post settings

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Marked as [WIP] because I'm not entirely sure of this is the correct way to go, if things need changing or optimising.