Syntax-error highlighter for LearnBlock

This project aims to endow LearnBlock with the ability to determine the different syntax-errors of a program and to display those errors in both, the visual program and the Block-Text code. Those parts of the code containing a syntax-error will be highlighted. In addition, information about the kind of error and some guidelines on how to correct will be displayed as long as the user asks for it (for instance, clicking on a highlighted statement or block).