The code can be found on bitbucket.org. This is where the code and all the revisions of the code reside. You can download the code from this site directly or, better yet, you can install Git which allows you to update your local copy regularly.
When you have Git installed you can clone the repository using the following command:
git clone https://bitbucket.org/vanderwaalsbv/datacrow.git
To build the code you need Maven installed. The code can be build from within the Modules folder (on your hard drive) using Maven:
mvn clean install
This command (run from the Command Prompt / Terminal) will build the entire product.