Small fix to include the prefix in the name of the Wordpress meta field
Metabox for Factlink is checked when the current page is a new page.
Replaced the checkbox with another radio item.
Removed unused members and added 'is Factlink enabled' logic.
Changed logic to only add metabox when selected pages or posts is selected in the admin menu.
Removed unused register statements.
Moved 'is Factlink enabled' logic to the settings model.
Changed comparison to builtin negation.
Merge pull request #17 from Factlink/change-admin-page-options-layout

Change admin page options layout