Felix Arntz e23004c344 Multisite: Introduce `get_main_site_id()`. ... This function can be used to easily get the main site ID of a given network via the optional `$network_id` parameter, which defaults to the current network. The existing `is_main_site()` now uses the new function internally and now accepts an optional `$network_id` parameter as well. The main purpose of the new function at this point is to ensure that the `WP_Network::$blog_id` property is always set. Magic getters in the class have been adjusted to auto-fill the property when it is accessed and empty. Furthermore the function encapsulates logic that was previously part of `ms_load_current_site_and_network()` and has been replaced with a call to the function now. Props spacedmonkey, jeremyfelt, johnjamesjacoby, flixos90. Fixes #29684. git-svn-id: https://develop.svn.wordpress.org/trunk@41380 602fd350-edb4-49c9-b593-d223f7449a82		2017-09-15 11:14:49 +00:00
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phpunit	Multisite: Introduce `get_main_site_id()`.	2017-09-15 11:14:49 +00:00
qunit	Add `wp.hooks` - JavaScript actions and filters.	2017-09-12 12:53:21 +00:00