Master's Thesis - using wikipedia contents in application I'm writing a mobile application which will be part of my master's thesis. In my application I'm using contents from the wikipedia (small fragments of articles and pictures) to present my solution on the specific data.

Must I add links to articles, images and to them licenses? 

If so, where: README.txt / about section / directly in the written part? Thx in advance for help
In a thesis you must reference any material/code that you did not solely created. 

So in your case, I would suggest in the the background chapter, explain, the used data gathering techniques (e.g., using an API), and then add all the required references into it. So in later chapters, the reader knows what are these data and where they came from.