entityqueue 8.x-1.0-alpha7

Changes since 8.x-1.0-alpha6:

• #2903149 by amateescu: Fatal error when updating to Drupal 8.4
• #2856833 by spesic, amateescu: Only users with "Administer entityqueue" should be able to create entityqueues
• #2849728 by itamair: Entity_Reference field definition configurable in the View Display
• #2846023 by dawehner: Disable contextual links when disabled in views
• #2842862 by mark_fullmer: Machine name length exceeding 32 characters causes error
• #2839334 by abu-zakham: EntityQueueListBuilder should check the existence of the edit link before changing its title
• #2836404 by amateescu: Subqueues should not have a canonical link in order for them to be exportable through REST.~
• #2837841 followup: Fix EntityQueueRelationship::query() to call the parent properly.
• #2837841 by ytsurk: Subqueue views relation: Doubled/redundant entries