Add support for non-mainspace pages

[localenbysnake]

Related issue for support for special pages

There should be support for other namespaces. I would suggest having an option to have the user choose which namespaces to have in the links, like how Special:Search has in the "Search in:" section.

[localenbysnake]

Also some other toggle-able options that could possibly be implemented if this were:

• Get user/user talk pages from the history of pages
• Get contribution pages from page histories
• Get pages from user contributions
• Get links from edit summaries from page histories
• Get talk pages directly from current page
• Get pages that are transcluded from the current page