Add hook after set_current_screen()

[ptahdunbar]

There needs to be a hook after set_current_screen() as it does a lot of work setting up the $current_screen global.. I'd hate to have to repeat it in admin_init as that's the last generic hook before load-$pagenow.

Patch adds new hook admin_loaded after set_current_screen()

[mikeschinkel]

Replying to ptahdunbar:

There needs to be a hook after set_current_screen()

+1

[markjaquith]

I was setting up some example code for you to use, that leverages load-$pagenow, but I ran across this apparent bug: #16513

[nacin]

Related, the improvements needed in #14886.

[c3mdigital]

This is no longer needed after the improvements in #14886