ComponentGroup.removeAll was broken. Fix + unit test. #427
Attempting to fix bug by moving _anchor out of Table and ComponentGroup into ComponentContainer
ComponentGroup.removeAll is now fixed, cleaner factorization of Table and ComponentGroup by
moving all of the anchoring logic into ComponentContainer. Cleaned up Table constructor by
having it recourse to other primitives rather than re-implementing logic directly.
Protect-name isSetup and isAnchored, improve comments
Update built files
Merge pull request #432 from palantir/fix-removeall

Fix removeall