Gone are the times when a website comprised static documents connected with fixed hyperlinks. The content of such a website could only be modified by a webmaster who either needed to be paid for each adjustment or in the form of a salary. Nowadays a website is an Internet application – a construction comprising the following 3 elements (layers): 1. graphic templates 2. scripts 3. content (both text and graphic) Scripts are responsible for loading content from a database and displaying it through templates. The effect seen by end users is the so-called front-end. On the other hand, the administrative panel (CMS interface) is the back-end and it can only be accessed by the website’s administrators. During website building process, a certain layout which has been previously approved...