Fix bad haml indentation
Nest interactives.html body in a findable div

[#45233971]
Only end drag if we leave top-level interactive element

Instead of dropping when we leave #interactive-container,
check to see if we are in responsive-content or interactive-
body. This allows us to keep dragging when possible -- over
top-bar links and in non-embedded interactive page.

[#45233971]