Merge pull request #830 from bugzmanov/Release_2_0_0

actor bugs
Merge pull request #831 from bugzmanov/Release_2_0_0

[RJA-xxx][fix] serial version id for deployment attributes
 [RJA-xxx] version 2.1.0-SNAPSHOT bump
Merge pull request #833 from ddurnev/agents

 [RJA-xxx] version 2.1.0-SNAPSHOT bump
Merge pull request #834 from bugzmanov/Release_2_0_0

[RJA-1818][fix] security by obscurity
Merge pull request #835 from bugzmanov/Release_2_0_0

[RJA-1821][fix] Read-only User should not see 'Edit' in System Roles
Merge pull request #836 from bugzmanov/Release_2_0_0

[rja-xxx][fix] metrics for groovy template service and abstractrepo
Merge pull request #837 from bugzmanov/Release_2_0_0

[rja-xxx][fix] authority service metrics
Merge pull request #839 from bugzmanov/Release_2_0_0

[RJA-xxx][fix] SAMAccountName is not mandatory in some organizations
[maven-release-plugin] prepare release release-2.0.0
[maven-release-plugin] prepare for next development iteration
merge from Relese_2_0_0 branch