Added inital user is blocked 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.
Initial NodeIsPromoted Condition implementation.
Fixed wrong annotation for node is promoted condition.
fixed Condition id const and brought array syntax back to php 5.3