Advanced search - improve after MVP

Chana pointed out, especially in the advanced search, that you cannot delete what is in the field.
Try going into the advanced search, click Food>Brachot. Now get rid of it - cannot! Also, when you close the advanced search and go back to the regular search, those parameters are still in place, so no results come up!

Must be able to:

1. Clear an advanced search parameter
2. When you close the advanced search, those parameters should be cleared as well, so when you go back to a regular search, those parameters are no longer in the search fields.
3. Take out the teaching goals. Rather have improved search according to https://zpl.io/adl5vGE