Pages with too long titles cannot be imported when final fullname exceeds 768

In confluence a page title can be up to 255.

If a page has a title of 250 for example and the space key is of length 5 then the final fullname will be 250 + 5 + 1 = 256 which exceeds 255. The page will fail import.

This should be related to CONFLUENCE-69 which treats a larger problem of page name length when running nested pages migrator.