Listing management (#223)

* upgrading dependencies, fixing image placeholder

* improving processing times label and hide when screen width is too low

* aligning run now button

* renaming settings -> general settings

* smaller security and memory improvements

* improving footer

* preparing listing management

* improve filtering for listings

* preparing new settings page

* preparing new settings page

* storing settings in db

* next release version

lib/features.js

@@ -0,0 +1,9 @@
+const FEATURES = {
+  WATCHLIST_MANAGEMENT: false,
+};
+
+export default function getFeatures() {
+  return {
+    ...FEATURES,
+  };
+}