More string cleanups.

Built from https://develop.svn.wordpress.org/trunk@25658


git-svn-id: http://core.svn.wordpress.org/trunk@25575 1a063a9b-81f0-0310-95a4-ce76da25c4cd
Make `url_to_postid()` work for custom post type URLs. Use `get_post_types()` and `get_taxonomies()` instead of directly accessing globals. Adds unit test.

Props faishal, for the globals fix.
Fixes #19744.


Built from https://develop.svn.wordpress.org/trunk@25659


git-svn-id: http://core.svn.wordpress.org/trunk@25576 1a063a9b-81f0-0310-95a4-ce76da25c4cd
`post_content` does not have a default value in the `$wpdb->posts` table. Add a default value of empty string to `wp_insert_attachment()` to avoid a tornado of database errors in PHP 5.5/MySQL 5.6, even when debug mode is turned off.

See #25282.


Built from https://develop.svn.wordpress.org/trunk@25661


git-svn-id: http://core.svn.wordpress.org/trunk@25577 1a063a9b-81f0-0310-95a4-ce76da25c4cd
Rather than adding a `taxonomy` arg to `get_category()`, convert all uses of `get_category()` in core to `get_term()`. By doing so, we negate the need to call `_make_cat_compat()` in a few places that are only looking for a single property.

Fixes #8722.


Built from https://develop.svn.wordpress.org/trunk@25662


git-svn-id: http://core.svn.wordpress.org/trunk@25578 1a063a9b-81f0-0310-95a4-ce76da25c4cd
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.


Built from https://develop.svn.wordpress.org/trunk@25663


git-svn-id: http://core.svn.wordpress.org/trunk@25579 1a063a9b-81f0-0310-95a4-ce76da25c4cd
When queries fail in option functions, bail before setting cache.

Standardize variables so things are less confusing.

fixes #25015.

Built from https://develop.svn.wordpress.org/trunk@25664


git-svn-id: http://core.svn.wordpress.org/trunk@25580 1a063a9b-81f0-0310-95a4-ce76da25c4cd
Allow to filter the `link` attribute via `shortcode_atts_gallery`. props iworks. fixes #24979.
Built from https://develop.svn.wordpress.org/trunk@25665


git-svn-id: http://core.svn.wordpress.org/trunk@25581 1a063a9b-81f0-0310-95a4-ce76da25c4cd
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.

Built from https://develop.svn.wordpress.org/trunk@25666


git-svn-id: http://core.svn.wordpress.org/trunk@25582 1a063a9b-81f0-0310-95a4-ce76da25c4cd
Revert [25663] for UX discussion
Built from https://develop.svn.wordpress.org/trunk@25667


git-svn-id: http://core.svn.wordpress.org/trunk@25583 1a063a9b-81f0-0310-95a4-ce76da25c4cd
Don't order feeds of search results by relevance.

Allow for orderby=relevance to explicitly request relevance.

fixes #7394.

Built from https://develop.svn.wordpress.org/trunk@25668


git-svn-id: http://core.svn.wordpress.org/trunk@25584 1a063a9b-81f0-0310-95a4-ce76da25c4cd
Replace use of global `$user_ID` in favor of `get_current_user_id()`. fixes #25372.
Built from https://develop.svn.wordpress.org/trunk@25669


git-svn-id: http://core.svn.wordpress.org/trunk@25585 1a063a9b-81f0-0310-95a4-ce76da25c4cd
Links manager: Restrict field length based on DB schema.

props solarissmoke, vinod-dalvi.
fixes #17296, #12264.

Built from https://develop.svn.wordpress.org/trunk@25670


git-svn-id: http://core.svn.wordpress.org/trunk@25586 1a063a9b-81f0-0310-95a4-ce76da25c4cd
Ensure that get_bloginfo( 'pingback_url' ) uses site_url(), for SSL awareness.

props technosailor.
fixes #25418.

Built from https://develop.svn.wordpress.org/trunk@25671


git-svn-id: http://core.svn.wordpress.org/trunk@25587 1a063a9b-81f0-0310-95a4-ce76da25c4cd
Use site_url() in theme-compat.

props technosailor.
see #25418.

Built from https://develop.svn.wordpress.org/trunk@25672


git-svn-id: http://core.svn.wordpress.org/trunk@25588 1a063a9b-81f0-0310-95a4-ce76da25c4cd
`WP_User::get_role_caps()` now returns the caps it was already setting. The method was previously just setting `$allprops` and requiring that property to be read.

Props nofearinc.
Fixes #24962.



Built from https://develop.svn.wordpress.org/trunk@25673


git-svn-id: http://core.svn.wordpress.org/trunk@25589 1a063a9b-81f0-0310-95a4-ce76da25c4cd
Don't use a double negative.

props TobiasBg.
fixes #18201.

Built from https://develop.svn.wordpress.org/trunk@25674


git-svn-id: http://core.svn.wordpress.org/trunk@25590 1a063a9b-81f0-0310-95a4-ce76da25c4cd
Remove redundant title attributes.

props sabreuse.
see #24766.

Built from https://develop.svn.wordpress.org/trunk@25675


git-svn-id: http://core.svn.wordpress.org/trunk@25591 1a063a9b-81f0-0310-95a4-ce76da25c4cd