Ignore also /nbproject/ folder from NetBeans projects.
Merge pull request #381 from zlamalp/ignore

Ignore also /nbproject/ folder from NetBeans projects.
Added grant unlimited tablespace to perunv3
Changed order of alter table sequences
Merge pull request #382 from zoraseb/execute_v3.sql

Added grant unlimited tablespace to perunv3
Prepare usedGids mechanics

- add methods for loading entityless attribute value from DB with "for
  update"
- add new module for attribute entityless_def_usedGids
- rework group_def_unixGID_namespace and resource_def_unixGID_namespace
  to use usedGids attribute
- add simple tests
Fix method getEntitylessAttrValueForUpdate

- if entityless attribute with subject not exists, create new one by
  insert (with null value) and work with it
	- without that you won't be able to create DB lock (row must exist),
		which is purpose of this method

- add new private method creating entityless attribute with null values