Not sure if it was intentional or a bug, but the widget would treat
`namespace: 0` (assume main namespace) in config the same as
`namespace: null` (allow all namespaces). This has been changed.
Change-Id: Iab2a76771de0debe9111d4ccce3477b022000e51
// Properties
this.limit = config.limit || 10;
- this.namespace = config.namespace || null;
+ this.namespace = config.namespace !== undefined ? config.namespace : null;
this.relative = config.relative !== undefined ? config.relative : true;
this.showRedirectTargets = config.showRedirectTargets !== false;
this.showRedlink = !!config.showRedlink;