Add filter reset when changing provider
Add filter reset when changing provider

- when changing the provider, remove the old filter values and reset the
page to zero.
- add code from the default currency PR

jjeffryes/openbazaar-desktop,OpenBazaar/openbazaar-desktop,jashot7/openbazaar-desktop,jashot7/openbazaar-desktop,OpenBazaar/openbazaar-desktop,jjeffryes/openbazaar-desktop,OpenBazaar/openbazaar-desktop,jashot7/openbazaar-desktop,jjeffryes/openbazaar-desktop