EMPHASIS: A principle of design, it refers to a way of combining the art elements to stress the differences between those elements and to create one or more centers of interest in a work of art.
The Catalyst Software Suite already includes compatible GPU driver - - you don't need to download driver separately, and certainly not a beta one. Leave them alone unless an update fixes a problem you're experiencing or offers new features you absolutely must have.
Jenkins is a continuous integration suite that checks your code out of a repository, builds and packages it, and dumps it out to a server so you can test it-all hands-off. It can use Maven or Ant as its build tool. In summary, Jenkins can use Maven as its build tool for continuous integration.