Working on #241. Problem of the positioning seems to be that Position.getY() returns a weird value.

- Also fixed big error prints when the crawler leaves the domain.
- The faulty `getY()` stuff is now printed too.
Merge branch 'fixes/155-fix-elements-without-interactions' into fixes/241-candidate-position-out-of-place
Position is correct again.

This fixes #241
Merge branch 'fixes/155-fix-elements-without-interactions' into fixes/241-candidate-position-out-of-place
Added the doctype again
Updated the changelog
Merge pull request #273 from crawljax/fixes/241-candidate-position-out-of-place

Fixes/241 candidate position out of place