Allow deletion of some but not all plots
Currently, you can delete all plots or plots one by one. would be nice to add:
delete plots by project (and the project itself)
delete plots by project and year
delete any set of plots (listbox multi-select enabled)
this would help if someone resampled plots and it didn't work, you could delete the plots that were resamples and try again. Currently, you have to either go back to a backup or delete plots one-by-one.