Documentation added & fixed - attributes

- javadoc fixes in AttributesManager and AttributesManagerBl
- documentation added and fixed in rpc, AttributesManagerMethod
- parm fix in rpc - removeAlsoUserFacilityAttributes changed to workWithUserAttributes
Documentation added & fixed - rpc Au to Ge

- added documentation mostly in rpc, but also in core and tasks-lib
Merge pull request #455 from Simcsa/doc

Documentation added and fixed