Conditional update of description

Handle updating the description differently, depending on whether or
not ‘wysiwyg’ is enabled in plugin options.
Include file without conditions

Removed conditional for including ‘edit-post.php’
Added $wpdb call

Added global call for $wpdb
Get plugin admin options

Get plugin admin options for wysiwyg
Added value for 'wysiwyg'

Added value to send to JS for ‘wysiwyg’