RTL should use Tahoma, Hebrew should use Arial.

props yoavf.
see #24977.

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git-svn-id: http://core.svn.wordpress.org/trunk@26670 1a063a9b-81f0-0310-95a4-ce76da25c4cd
Dashboard: set two columns as default for IE8 (as it doesn't support @media rules), see #25824.
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git-svn-id: http://core.svn.wordpress.org/trunk@26671 1a063a9b-81f0-0310-95a4-ce76da25c4cd
Fake a "non-responsive" window width for IE < 9 when folding/unfolding the menu (old IE doesn't support @media), fixes #26458.
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git-svn-id: http://core.svn.wordpress.org/trunk@26672 1a063a9b-81f0-0310-95a4-ce76da25c4cd
Avoid a notice by checking that SCRIPT_DEBUG is defined before evaluating it in `register_admin_color_schemes()`.

See #26316.

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git-svn-id: http://core.svn.wordpress.org/trunk@26673 1a063a9b-81f0-0310-95a4-ce76da25c4cd
Updated About page screenshots; better image reduction with sharper text, hiding all browser chrome in device screenshots, correct the proportions of phone and tablet in Twenty Fourteen screenshot. See #26387.
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git-svn-id: http://core.svn.wordpress.org/trunk@26674 1a063a9b-81f0-0310-95a4-ce76da25c4cd
A small adjustment to the page background color per yesterday's conversation with nacin, from #eee to #f3f3f3. This retains enough contrast with white widget containers while making for a more comfortable reading experiences on pages that heavily use the default background color, like the About page. A few adjustments to go along with it:

- Horizontal rules on the About page are lighter, to match their previous level of contrast with #eee
- Eliminated the .flush-top class on <hr>s on the About page since we want the styles applied to all About page <hr>s.
- Color schemes should match the bottom border of active tabs to the scheme's body-background variable.
- Lighten the comment background color on the Dashboard activity widget to keep adequate contrast with the new lighter body background.

See #25858.


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git-svn-id: http://core.svn.wordpress.org/trunk@26675 1a063a9b-81f0-0310-95a4-ce76da25c4cd
A few more adjustments to about page screenshots, with better sample content. See #26387
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git-svn-id: http://core.svn.wordpress.org/trunk@26676 1a063a9b-81f0-0310-95a4-ce76da25c4cd
Correcting the device proportions on the Twenty Fourteen screenshot; see #26387.
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git-svn-id: http://core.svn.wordpress.org/trunk@26677 1a063a9b-81f0-0310-95a4-ce76da25c4cd
Minor adjustments to the Twenty Fourteen screenshot on the About page. See #26387.
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git-svn-id: http://core.svn.wordpress.org/trunk@26678 1a063a9b-81f0-0310-95a4-ce76da25c4cd
Adjusting about-colors.png so it lines up on the grid with images above and below it. See #26387.


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git-svn-id: http://core.svn.wordpress.org/trunk@26679 1a063a9b-81f0-0310-95a4-ce76da25c4cd
Nonces are already per-user. see #22862.

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git-svn-id: http://core.svn.wordpress.org/trunk@26680 1a063a9b-81f0-0310-95a4-ce76da25c4cd
Remove 3.7 about images. see #26387.

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git-svn-id: http://core.svn.wordpress.org/trunk@26681 1a063a9b-81f0-0310-95a4-ce76da25c4cd
About screen: Only show the pick-a-color section if there are 2 or more of the eight new color schemes available. And only show the eight core schemes.

This hides the section in develop.svn /src's directory (use /build for colors) and when a plugin is manipulating/unregistering colors. In both situations, which are rare, losing the section is fine.

This removes a fallback image as we were previously showing the section in these cases; the rest of the page shows off the design (and color opportunities) well enough on its own to avoid this confusing section.

see #26387.

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git-svn-id: http://core.svn.wordpress.org/trunk@26682 1a063a9b-81f0-0310-95a4-ce76da25c4cd
Twenty Fourteen: RTL fixes for the navigation.

props yoavf.
fixes #26200.

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git-svn-id: http://core.svn.wordpress.org/trunk@26683 1a063a9b-81f0-0310-95a4-ce76da25c4cd
Move pointer-specific CSS from wp-admin.css to wp-pointer.css.

props ocean90.
fixes #26477.

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git-svn-id: http://core.svn.wordpress.org/trunk@26684 1a063a9b-81f0-0310-95a4-ce76da25c4cd
Remove image referenced as removed in [26795]. see #26387.

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git-svn-id: http://core.svn.wordpress.org/trunk@26685 1a063a9b-81f0-0310-95a4-ce76da25c4cd
About page: Don't load zxcvbn, which is a dependency of an unused piece of user-profile.js.

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Request a larger avatar for the toolbar, as we use it at narrow responsive sizes.

props kovshenin.
fixes #26292.

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A couple of copy edits for the About page.

See #26387.

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