In `WP_List_Table::display_rows_or_placeholder()`, the call to `get_column_info()` in unnecessary and unused. The call to `get_column_count()` immediately after makes the same call internally.

See #27882.



git-svn-id: https://develop.svn.wordpress.org/trunk@28279 602fd350-edb4-49c9-b593-d223f7449a82
Multisite: Treat 'www' as a special subdomain, reversing 3.9 regression.

props jeremyfelt.
fixes #27927.


git-svn-id: https://develop.svn.wordpress.org/trunk@28280 602fd350-edb4-49c9-b593-d223f7449a82
Where a filter no longer exists, it need not be notated.

Fixes #24444. See r28258.


git-svn-id: https://develop.svn.wordpress.org/trunk@28283 602fd350-edb4-49c9-b593-d223f7449a82