Merge branch 'configure_logo' into 'admin_cfg'

Fix site logo and banner rendering when no logo or banner is set

See merge request soapbox-pub/soapbox-fe!122

app/soapbox/features/public_layout/components/site_banner.js

@@ -15,7 +15,7 @@ class SiteBanner extends ImmutablePureComponent {
       imgLogo:  (<img alt={instance.get('title')} src={soapbox.get('banner')} />),
       textLogo: (<h1>{instance.get('title')}</h1>),
     };
-    return soapbox.has('banner') ? logos.imgLogo : logos.textLogo;
+    return soapbox.getIn(['banner']) ? logos.imgLogo : logos.textLogo;
   }
 
 }

app/soapbox/features/public_layout/components/site_logo.js

@@ -15,7 +15,7 @@ class SiteLogo extends ImmutablePureComponent {
       imgLogo:  (<img alt={instance.get('title')} src={soapbox.get('logo')} />),
       textLogo: (<h1>{instance.get('title')}</h1>),
     };
-    return soapbox.has('logo') ? logos.imgLogo : logos.textLogo;
+    return soapbox.getIn(['logo']) ? logos.imgLogo : logos.textLogo;
   }
 
 }