Modal flow can be stacked. Tests needed.

Conflicts:
	src/modal/main.js
Debugged and tested.

Conflicts:
	src/collection/main.js
	src/content/fetch-content.js
	tests/spec-list.js
	tests/spec/collection/main.js
Remove fetch-content tests because it is not needed atm
Make tests pass
Add tests
Release 2.10.0
Merge pull request #231 from Livefyre/ks_stacking_modal

Ks stacking modal