Add a new boolean parameter "edgekeys" for defining keys that have the
additional (swipe) keys on the edges (top, right, left, bottom) instead
of at the corners (top left, top right, bottom left, bottom right).
It is placed on the top-right of the enter key on every layouts.
It sends a special event (performEditorAction) instead of writing a
newline.
The "actionId" is passed through the EditorInfo object in an obfuscated
way so it's not clear whether it's using the right one.
Remove the "emoji" and "conf" action from the enter key. Move the former
to the "arrows" key and the latter to "p".
Slightly increase the size of the keys around the spacebar, and decrease
the spacebar size.
