Highlight manual test

1. Create selection that starts before the last word of the first paragraph and ends after first word of the second paragraph and press Set yellow highlight.
2. Yellow highlight should be visible on text and widget.
3. Select whole contents of the editor and press Set red highlight.
4. Yellow highlight should be visible as before, red highlight should be visible on ranges where yellow highlight is not applied.
5. Click Remove yellow highlight.
6. Red highlight should be visible on the whole content, including the widget.
7. Play with highlights, add and remove them, check if they are applied correctly.

Highlighting table cells

1. You can select the entire table cell and apply a highlight to it.
2. The highlight should change the background of an entire cell (not only its content).

NOTE: Yellow highlight should be visible over red and blue one. Red highlight should be visible over blue one.