No way to deselect Field Filter

[shivangi]

When a field of a subject is selected for filtering and then when one decides not to use that filter, there is no way to deselect the field filter.
The subject and value filters one can deselect but field filter is not showing that option

1. Chose Activity Subject
2. Chose TypeOfImplementation
3. Chose CFW and it returned nothing.
4. So wanted to unselect TypeOfImplementation and see all of the Activity photos. But could not do so.

[vinayvenu]

There is a workaround (Reset filters), so pushing this to release 5.0