When Quick Edit'ing a page, checks if edited page has a new parent and moves the row underneath that one. If the parent doesn't exist on this page then it hides the row altogether.

Props solarissmoke, MikeHansenMe.
Fixes #14188.


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When queries fail in option functions, bail before setting cache.

Standardize variables so things are less confusing.

fixes #25015.

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Allow to filter the `link` attribute via `shortcode_atts_gallery`. props iworks. fixes #24979.
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Show a proper error message on the dashboard when the current theme is broken.

Clean up Appearance -> Themes when we don't have enough information to show for a broken theme.

Clean up broken/ugly "alt" row styling when we are displaying broken themes.

props johnbillion for initial patch.
fixes #21670.

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Revert [25663] for UX discussion
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