In SCTK shiny app, inability to "reset" when an error occurs #617
Description
This issue is somewhat related to my previous one #615.
Using the shiny app, I often encountered errors (for example at data import, cell QC or filtering steps, ...). Everytime, I was unable to continue working because the initial error generated other errors downstream, so I had to quit and start the app again, reimport data etc... It would be a big plus to be able to perform a "reset" of the steps in the current tab. For example in the cellQC tab, remove all previous results of cell QC and be able to recalculate them. Or in the filtering tab, delete the results of the filtering step, set filtering criteria again and calculate a new filter. In the same spirit, it would be useful to reset the results of one tab and go back to the previous one, and possibly step by step go back all the way to the import tab if for example the user would like to add a sample. At a minimum, could you enable a complete "reset", allowing the user to get rid of all variables and import the data again without closing and restarting the app?