New Interface with ability to change open pop-up window's concept, Add Menu Items, and refactoring of helper classes
1) Enable Back/Forth navigation that is window-specific.
2) Add Radio buttons per view
3) Add previousConcept and Modify Buttons
Adding refset annotation tooltips on ctrl-hover
Enable notification if ConceptNode isEmpty
Add couple more of validation cases including isEmptyRow
Merge branch 'master' of https://github.com/Apelon-VA/ISAAC