Move list edit/namespace to separate pages and in a menu (#397)

Co-authored-by: kolaente <k@knt.li>
Reviewed-on: https://kolaente.dev/vikunja/frontend/pulls/397
Co-authored-by: konrad <konrad@kola-entertainments.de>
Co-committed-by: konrad <konrad@kola-entertainments.de>

src/components/misc/dropdown-item.vue

@@ -0,0 +1,28 @@
+<template>
+	<router-link
+		:to="to"
+		class="dropdown-item">
+		<span class="icon" v-if="icon !== ''">
+			<icon :icon="icon"/>
+		</span>
+		<span>
+			<slot></slot>
+		</span>
+	</router-link>
+</template>
+
+<script>
+export default {
+	name: 'dropdown-item',
+	props: {
+		to: {
+			required: true,
+		},
+		icon: {
+			type: String,
+			required: false,
+			default: '',
+		}
+	},
+}
+</script>