basic e2e tests for stack title edit

Signed-off-by: Simon Hötten <s+git@hoetten.org>

src/components/board/Stack.vue

@@ -22,7 +22,7 @@
   -->
 
 <template>
-	<div class="stack">
+	<div class="stack" :data-cy-stack="stack.title">
 		<div v-click-outside="stopCardCreation"
 			class="stack__header"
 			:class="{'stack__header--add': showAddCard}"
@@ -43,6 +43,7 @@
 				</h3>
 				<form v-else-if="editing"
 					v-click-outside="cancelEdit"
+					data-cy="editStackTitleForm"
 					@submit.prevent="finishedEdit(stack)"
 					@keyup.esc="cancelEdit">
 					<input v-model="copiedStack.title"