Working WP Editor on Move Form

* Added wp_head and wp_footer functions to allow WP to cue up necessary
 assets for editor.
* Updated names for form fields to match WP database columns.
* Added WP WYSIWYG editor to accept move content on make a move form.
Updates move form to correctly redirect.

Ensures that the form correctly redirects when submitted. Moves WP's
get_header function after the call to redirect, to avoid having
duplicate headers sent to the page.

Removes unnecessary spaces between PHP blocks and updates indentation
for readability.
Removes unnecessary semicolon.
Checks for a game ID before saving move.

Updates move form to only insert a move post if there is a game ID
passed as a $_GET parameter.

Also slightly streamlines saving of data; Since we already have the
parent ID, there's no need to set that in the POST again.
Require once, on the safe side.
Merge branch 'feature/wp_editor_move' into develop

Conflicts:
	footer.php