More ducumentation pages

There are some topics that do not have documentation pages at the moment.
They will be added for version 2.1.0 and this issue contains a list of those pages.

* [ ] ByteBlock / Segment page
* [ ] ByteRow page
* [ ] using with 7-Segment Display
* [ ] (changes movement page) movement for 7-Segment Display

If you think some other page is also missing please leave a comment.