Merge pull request #6564 from RosettaCommons/GreenTomato5/interactive_clear_params_cache
[Foldit] Clears Params File Cache for Puzzles Loaded With Secret Buttons
This PR clears the cached params file for puzzles loaded with secret buttons. Currently, puzzles loaded with secret buttons have the same ID of 1, so when a puzzle is first loaded with secret buttons ChemicalManager will use its params file and associate it with a specific tag based on puzzle ID. Because successive puzzles loaded with secret buttons also have the same ID of 1, new params files don't replace the old ones.