renamed 'gradle' project into 'build'. Moved build scripts to 'build'. Removed deprecated 'openbis_all' project

This reverts commit 5a994237.

SSDM-13417: Changed update in transaction mechanism so None list attributes are not counted as updated. Created a test that verifies that update based on get_samples method is not overriding parents/children

This reverts commit 0d3d593a.

This reverts commit 4109123c.

This reverts commit 30f2f6b4.

This reverts commit d1f47813.

# Conflicts:
#	openbis_api/source/java/ch/ethz/sis/openbis/generic/OpenBISAPI.java