Being refactoring collapsiblePanel
Continue refactor. Looking into ways to handle action functions
Safety commit during refactor
Attempt to introduce a state service
Merge commit '5e4a7b' into 022_refactor02
Refactoring progress with flip form in panels.
Additional progress. Still need to do actual selection of a set and
deletion.
Put the delete functions in. Can't test yet til changes to table are
made
Convert tracks panel for refactor
Convert Set Builder for refactor
Get trackHelper working post-refactor.