Improve explicit label and add a AlreadyInYourLibrary indicator

client/components/widgets/AlreadyInLibraryIndicator.vue

@@ -0,0 +1,19 @@
+<template>
+  <ui-tooltip v-if="alreadyInLibrary" :text="$strings.LabelAlreadyInYourLibrary" direction="top">
+    <span class="material-icons ml-1" style="font-size: 0.8rem">check_circle</span>
+  </ui-tooltip>
+</template>
+
+<script>
+export default {
+  props: {
+    alreadyInLibrary: Boolean
+  },
+  data() {
+    return {}
+  },
+  computed: {},
+  methods: {},
+  mounted() {}
+}
+</script>