Update filters when filtered namespace is renamed

[Martin005]

When I:

1. Create keys under a namespace
2. Filter for keys with that namespace
3. Click on the namespace banner and rename the namespace to something completely different,

then the filtering stays the same and no keys are shown as the filter contains the old namespace name.

It would be great if the filtering was updated to the renamed namespace after the namespace is renamed through the namespace banner. Also, the current behaviour has a side-effect that the old namespace name stays in the filter, so when I filter for the new namespace name, I have "2 filters".

[stepan662]

Not sure what to do about this, it's no easy task as the filters are completely separated thing from namespaces renaming. However, you can now change the namespace through bach operation, which is probably cleaner, so we might remove the renaming feature completely.