[BISERVER-11956] - removing "test" and "tests" folders from the default assembly. This can be overridden by setting a property (include.js.test.folder) to true.

This is done to get rid of file paths that are too long for windows when installing the platform.
Merge pull request #317 from rfellows/BISERVER-11956

[BISERVER-11956] - removing "test" and "tests" folders from the default assembly