Added inital user is blocked condition.
Added initial Node is published condition.
Added initial NodeIsSticky class
Fixed code according to new D8 structure
Merge pull request #1 from jzavrl/task-port-condition-node-is-sticky-2269571

Issue #2269571 by jzavrl: Add initial NodeIsSticky condition class.
Improve the context user label for the UserIsBlocked condition.
Removed constraints and changed type to entity:node
Added a test case for the UserIsBlocked condition.
Updated label for context
Merge pull request #5 from mvujaklija/nodeispublished

Issue #2269569: Merged initial node is published condition.
Issue #2269569: Added a test for the 'Node is Published' condition.
Issue #2269575: Added 'Path has url alias' condition and not-working test.
Added method documentation