[BUGFIX] IRRE: Selected items remain in selector with foreign_unique

Problem: When an inline field is defined as unique (foreign_unique
is set), selected items are removed neither from the inline record
selector, nor from the children record selectors.

Solution: Remove the used records from all selectors. Also, when
updating and collapseAll is set, remove records already used from
the child record after its ajax-retrieval/expansion.

Change-Id: I54c840419b4f3cf31626d6c4e63650101ae22cab
Fixes: #21102
Releases: 4.5, 4.6, 4.7
Reviewed-on: http://review.typo3.org/8892
Reviewed-by: Wouter Wolters
Tested-by: Wouter Wolters
Reviewed-by: Tolleiv Nietsch
Tested-by: Tolleiv Nietsch