License compliance documentation: removing deprecated and update classifications

What does this MR do?

Per #12937 (closed), license compliance updated it's classification terms used in the UI. This MR removes deprecated terms seen in the documentations and replaces with new:

New terms (and deprecated):

• Uncategorized, admin has not selected classification
• Allowed (replaces approved), admin has classified license as acceptable
• Allow (replaces approve), used in the call-to-action seen in the MR (admin view) to classify license as Allowed
• Denied (replaces blacklisted), project participant views this classification when admin classified license as not allowed
• Deny (replaces blacklist), used in the call-to-action seen in the MR (admin view) to classify license as unacceptable

Screenshots

Does this MR meet the acceptance criteria?

Conformity

• Changelog entry
• Documentation (if required)
• Code review guidelines
• Merge request performance guidelines
• Style guides
• Database guides
• Separation of EE specific content

Availability and Testing

• Review and add/update tests for this feature/bug. Consider all test levels. See the Test Planning Process.
• Tested in all supported browsers
• Informed Infrastructure department of a default or new setting change, if applicable per definition of done

Security

If this MR contains changes to processing or storing of credentials or tokens, authorization and authentication methods and other items described in the security review guidelines:

• Label as security and @ mention @gitlab-com/gl-security/appsec
• The MR includes necessary changes to maintain consistency between UI, API, email, or other methods
• Security reports checked/validated by a reviewer from the AppSec team