feat: implement modals with vue router 4

This is an implementation of the modals with the new possibilities of vue router 3.

See: https://github.com/vuejs/vue-router/issues/703#issuecomment-865066913 for a better explanation
and the linked example implementation: https://github.com/vuejs/vue-router-next/blob/master/e2e/modal/index.ts

src/components/tasks/edit-task.vue

@@ -67,7 +67,7 @@
 
 		<router-link
 			class="mt-2 has-text-centered is-block"
-			:to="{name: 'task.detail', params: {id: taskEditTask.id}}"
+			:to="taskDetailRoute"
 		>
 			{{ $t('task.openDetail') }}
 		</router-link>
@@ -102,6 +102,15 @@ export default {
 			taskEditTask: TaskModel,
 		}
 	},
+	computed: {
+		taskDetailRoute() {
+			return {
+				name: 'task.detail',
+				params: { id: this.taskEditTask.id },
+				state: { backgroundView: this.$router.currentRoute.value.fullPath },
+			}
+		},
+	},
 	components: {
 		ColorPicker,
 		Reminders,

src/components/tasks/partials/kanban-card.vue

@@ -7,8 +7,8 @@
 			'has-light-text': !colorIsDark(task.hexColor) && task.hexColor !== `#${task.defaultColor}` && task.hexColor !== task.defaultColor,
 		}"
 		:style="{'background-color': task.hexColor !== '#' && task.hexColor !== `#${task.defaultColor}` ? task.hexColor : false}"
-		@click.ctrl="() => toggleTaskDone(task)"
 		@click.exact="() => $router.push({ name: 'task.kanban.detail', params: { id: task.id } })"
+		@click.ctrl="() => toggleTaskDone(task)"
 		@click.meta="() => toggleTaskDone(task)"
 	>
 		<span class="task-id">
@@ -112,6 +112,13 @@ export default {
 				this.loadingInternal = false
 			}
 		},
+		openTaskDetail() {
+			this.$router.push({
+				name: 'task.detail',
+				params: { id: this.task.id },
+				state: { backgroundView: this.$router.currentRoute.value.fullPath },
+			})
+		},
 	},
 }
 </script>

src/components/tasks/partials/singleTaskInList.vue

@@ -8,7 +8,7 @@
 		>
 		</span>
 		<router-link
-			:to="{ name: taskDetailRoute, params: { id: task.id } }"
+			:to="taskDetailRoute"
 			:class="{ 'done': task.done}"
 			class="tasktext">
 			<span>
@@ -126,10 +126,6 @@ export default {
 			type: Boolean,
 			default: false,
 		},
-		taskDetailRoute: {
-			type: String,
-			default: 'task.list.detail',
-		},
 		showList: {
 			type: Boolean,
 			default: false,
@@ -167,6 +163,13 @@ export default {
 				title: '',
 			} : this.$store.state.currentList
 		},
+		taskDetailRoute() {
+			return {
+				name: 'task.detail',
+				params: { id: this.task.id },
+				state: { backgroundView: this.$router.currentRoute.value.fullPath },
+			}
+		},
 	},
 	methods: {
 		async markAsDone(checked) {