Use shorter syntax for bottom placement

Signed-off-by: Christoph Wurst <christoph@winzerhof-wurst.at>

js/components/Address.vue

 <template>
 	<span :title="email"
-		  v-tooltip="{ content: 'label', placement: 'bottom' }">{{ label }}</span>
+		  v-tooltip.bottom="label">{{ label }}</span>
 </template>
 
 <script>