Add mentions column (Deck)

src/client/app/desktop/views/pages/deck/deck.mentions-column.vue

@@ -0,0 +1,38 @@
+<template>
+<x-column :name="name" :column="column" :is-stacked="isStacked">
+	<span slot="header">%fa:at%{{ name }}</span>
+
+	<x-mentions/>
+</x-column>
+</template>
+
+<script lang="ts">
+import Vue from 'vue';
+import XColumn from './deck.column.vue';
+import XMentions from './deck.mentions.vue';
+
+export default Vue.extend({
+	components: {
+		XColumn,
+		XMentions
+	},
+
+	props: {
+		column: {
+			type: Object,
+			required: true
+		},
+		isStacked: {
+			type: Boolean,
+			required: true
+		}
+	},
+
+	computed: {
+		name(): string {
+			if (this.column.name) return this.column.name;
+			return '%i18n:common.deck.mentions%';
+		}
+	},
+});
+</script>