3.7 regression: Fix the width of captioned images inserted into the visual editor.

Pulls some arithmetic outside of some string concatenation to avoid a nasty uglify.js regression: https://github.com/mishoo/UglifyJS2/pull/330.

Merges [25921] to the 3.7 branch.

props LucP.
fixes #25700.

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3.7 regression from [25119]: Have in_category() return false when the first argument is empty.

Merges [25923] to the 3.7 branch.

props ericlewis.
fixes #25706.

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In update_option(), call the update_option hook before the DB update.

Merges [25925] to the 3.7 branch.

Reverses a regression from [25664].

props calin.
fixes #25705.

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About page: Replace 3.7 with the current version (3.7.1, etc.).

Normally this would be sprintf'd in but we don't want to change a string at this point.

fixes #25683 for the 3.7 branch.

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3.7.1-beta1

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Have get_current_user_id() return 0 when pluggable.php is not yet included (which brings the ability to set or get the current user).

Merges [25929] to the 3.7 branch.

fixes #25690.

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Update the about page for 3.7.1. Tentative bug count.

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