ljelinko_Review and update missing javadoc for org.jboss.reddeer.direct plugin

Review and update missing javadoc
* all public members (classes, methods, etc.) should contains javadoc
* user should be able able to understand behaviour from description without analyzing the code
* use since (for example since 0.5 means <0.5-snapshot...0.6)
* use deprecated with referencing the replacement