[Components][Table]: Added: onRender event.
[Components][Table]: Added: setDisabled.
[Content][Entities]: Association between page and pageTag is OneToOne.
[Content][Entities][PageEntity]: Added: method 'setAsRoot'.
[Administration][Presenters][ContentPresenter]: Added: New action button 'set as root'.
[Components][PanelControl]: Page can be set as root.