(Feature request) Allow 'rebuild index' to rebuild only a selected index

Currently, if you want to change an index(or make a new one), you have to rebuild all indexes at once. It would be very handy to have a multiple-select screen after activating the "rebuild indexes" function, to select which index(es) to rebuild.

As it is now, I have to either disable all of the indexes I don't want to regenerate while I am working on the new index, or wait for minutes for all of them to regenerate. If I do the former, I then have to re-enable all of the indexes and then rebuild them again, to pick up the other indexes.