Bestow sentience upon users. Level up their pronoun.

Props johnbillion
fixes #24513


git-svn-id: https://core.svn.wordpress.org/trunk@24992 1a063a9b-81f0-0310-95a4-ce76da25c4cd
Deprecate get_dashboard_blog().
Remove contextual help for Dashboard Site from the network settings screen.

Props sillybean, ocean90
fixes #24838


git-svn-id: https://core.svn.wordpress.org/trunk@24993 1a063a9b-81f0-0310-95a4-ce76da25c4cd