Add a proper setting menu

Signed-off-by: Thomas Citharel <tcit@tcit.fr>

js/src/views/Settings/Notifications.vue

@@ -0,0 +1,13 @@
+<template>
+    <div>
+        <h2 class="subtitle">{{ $t('No notification settings yet') }}</h2>
+    </div>
+</template>
+<script lang="ts">
+import { Component, Vue } from 'vue-property-decorator';
+
+@Component
+export default class Notifications extends Vue {
+
+}
+</script>