interface to getAliases to show the alias names in the graph builder
allow graph builder to remove a source
reuse createTargetImage
targetproductdialog interfaces
Merge branch 'gpf' of https://github.com/Array-Org/beam into Array-Org-gpf
renamed variable to sourceId
added test for removing sources from a node
corrected imports
Merge branch 'Array-Org-gpf'