in replay mode, scroll to next work object automatically

[hofstef]

Is your feature request related to a problem? Please describe.
Given a Domain Story that is larger than the screen. When I use the replay mode and the next sentence is off-screen, I have to scroll the canvas manually so that the sentence becomes visisble. Often it is not obvious where to scroll, so I have to zoom out, find the new sentence, scroll there and zoom in again. This is tedious.

Describe the solution you'd like
When I click the "next" button in replay mode, and the sentence goes off-screen, the canvas should be scrolled automatically so that the sentence is visible. The solution should take into account that unnecessary scrolling might lead to disturbing user experience. The canvas should not just "jump around" every time I click the "next" button.