Refactor

Make mk-user-name component

src/client/app/common/views/components/user-name.vue

@@ -0,0 +1,16 @@
+<template>
+<misskey-flavored-markdown :text="user.name || user.username" :should-break="false" :plain-text="true" :custom-emojis="user.emojis"/>
+</template>
+
+<script lang="ts">
+import Vue from 'vue';
+
+export default Vue.extend({
+	props: {
+		user: {
+			type: Object,
+			required: true
+		}
+	}
+});
+</script>