added GIDS application

GIDS (Genomic Information Database System) is a database that is used by the Genetics department of the UMCG. It is mainly used to store lab data (phenotype + sample information).

In the tools section there is a GidsToOmxConverter, that converts GIDS excel files to omx format.
There is also a tool that compares 2 files with eachother and outputs the differences.