Display detailed stripe charge error messages

src/api.js

@@ -138,7 +138,7 @@ export function requestMembershipCharge(auth_token, stripe_token, membership_typ
                     dispatch(membershipChargeSuccess(data))
                 },
                 data => {
-                    dispatch(membershipChargeFailure(data || {'non_field_errors': ['Kunne ikke belaste kort, prøv igjen']}))
+                    dispatch(membershipChargeFailure(data['detail'] || 'Kunne ikke belaste bankkortet, prøv igjen'))
                 }
             )
     }

src/modules/membership/ProofContainer.js

@@ -36,7 +36,7 @@ class ProofContainer extends Component {
             user={this.props.user}
             isChargingMembership={this.props.isChargingMembership}
             isLoadingMembershipType={this.props.data.loading}
-            chargeError={this.props.chargeError ? 'Kunne ikke belaste bankkortet, prøv igjen...' : ''}
+            chargeError={this.props.chargeError ? this.props.chargeError : ''}
             onChargePress={this.openStripe}
             onLogoutPress={this.props.onLogoutPress}
             membershipPrice={this.getPrice(this.props.data.membershipTypes)}