This function is part of a suite of functions handling the interface between the kindisperse app & R
package. Due to how shiny's interactive programming works, ordinary objects are not visible to the reactive functions
embedded in the app. The solution implemented here is to construct a custom environment, env_appdata
, that is
accessible within the app and outside of it.
When called, this function clears all attached objects from the app interface environment, keeping it from becoming
over-clutttered & taking up space.