Netsurf needs thread

[Jenna64bit]

1. We should have some way to package up a more complete icon theme and settings for netsurf, so users don't have to do that manually
2. Preferences window doesn't have localization working
3. Bookmarks aren't saved, probably path issue?

[Jenna64bit]

It would also be good to create a patch for snprintf in libdicl rather than the current hardcoded lengths, which could fall prey to some kind of overflow.

[techomancer]

also libwebp has to be added to deps