Finish the `large-datasets` branch

[mradke]

Todo

• Render only a small portion of the datastructure elements to the dom, depending on the scroll position
• do not recalculate the vertical position of each row on every scroll event
• recalculate the height of the list-container on change (i. e. when filtering)
•  do some performance tests

In the end the performance shall be comparable to https://github.com/bvaughn/react-virtualized