(4#) added description of widgets to the tutorial
(#4) added description how to add external libraries to the tutorial
(4) Updated chapter 'Widget Communication'
(4) Updated chapter 'Widget Communication' and refactored parts of the tutorial
(4) Fixed spelling and other mistakes.
(4) Fixed spelling and other mistakes.
(4) Fixed spelling and other mistakes.
(#4) Updated the documentation after review.
(#4) Updated the documentation after review.
Merge branch 'feature/4-create-tutorial'