wp-signup.php does not validate when user logged in.

[snumb130]

When user logged in the wp-signup.php page shows the following errors when validating against HTML5.

Line 66: No p element in scope but a p end tag seen.

• caused by lines 179 through 187 of wp-signup.php. ul is nexted within p. Move closing p before the linked list.

Line 72: No p element in scope but a p end tag seen.

• caused by line 98 where closing p is given with no opening p. Remove closing p tag.

Line 85: No p element in scope but a p end tag seen.

• caused by lines 102 through 114 of wp-signup.php. div is nested in p. Close p before div and open afterward.

[snumb130]

Patch to wp-signup.php to fix html5 validation errors when user logged in.

[ocean90]

use br instead of div.

[nacin]

(In [15199]) Valid HTML for wp-signup. fixes #13369, props ocean90, snumb130.

[nacin]

(In [15201]) Provide context for screen options plural labels. fixes #13369.

[nacin]

Part of [15199] was reverted in [15200], then committed in [15201], which was actually for #13673. I need a vacation.