Creating a category on the add/edit post page and pressing enter saves the post

[gilbitron]

When you create a category on the add/edit post screen and hit "enter" the expected behaviour is to create the category. Instead the post is saved and the category is not created.

[gilbitron]

This diff fixes the issue on the Edit Post screen but not on the Add Post screen.

[JohnONolan]

I've noticed this too - tripped me up several times.

[johnbillion]

This could also be applied to the post date/time inputs as I've seen the same thing happen there a few times.

[garyc40]

fixed "enter" keypress on both publish date and new category text fields, works in both new / edit for post / page

[garyc40]

removed "console.log"

[garyc40]

moved $.fn.submitTarget to post.dev.js, use generic instead of explicit jQuery object

[SergeyBiryukov]

Duplicate of #14312.