fix default bookmarks activelinks

[TheSeeker]

Bookmarks may not point to the root of a site, so use regex to construct the activelink instead of blindly tacking activelink.png at the end.

This assumes activelinks are always in the root.

[Bombe]

Yeah, you’re not gonna sneak that one in without a test. 😄

[ArneBab]

Our build system seems unhappy about Capitalized Case.

[Bombe]

Uh, yeah, as should have been @TheSeeker’s IDE?! Because that’s not valid Java…

[ArneBab]

I agree very much that we need this fix (thank you!), but the current implementation is still buggy. A test just for the key adjustment should make this much easier to develop.