Bug 914475 JEP UI element id generator
Bug 914475: a setID function will be necessary for example of defining custom IDs, also this will be necessary if `things` can have ids that change, which is necessary for extendability
Bug 914475 Updating ID generator JEP to reflect review comments, only using method `identify` now
Merge pull request #1239 from erikvold/914475

Bug 914475 JEP UI element id generator r=@gozala