Board factory

I'm not sure if I should try to add more tests both to the integration test and the unit test, I'm happy for any suggestions.
Daniel says thet the documentation for private methods should be as short as if it was just part of code in an other method, so maybe should this be shortened. In any case I think the standard for private methods is to use this kind of comments (singl star)
/*
*
*/
instead of double star as in javadoc comments