Removes the original signature options and embeds them in a panel in the profile (like the avatar panel). An administrator can also edit signatures from the ACP and can set if signatures and signature images are allowed, including parameters for each of these.

Options are:
- uploading an image from your machine or a URL
- setting signature text (the original signature), without bbCode image tags
- always attach your signature (the original option)
- allow signatures (yes/no; enables/disables signatures wherever they are displayed)
- allow signature images (yes/no; enables/disables signature images wherever they are displayed).