feat(client): 自動でもっと見るオプション (#6403)

* wip

* ugokanai

* wip

* implement setting subscribing

* fix lint

* ✌️

* Update notifications.vue

Co-authored-by: syuilo <Syuilotan@yahoo.co.jp>

src/client/components/users-dialog.vue

@@ -15,8 +15,7 @@
 				</div>
 			</router-link>
 		</div>
-
-		<button class="more _button" v-if="more" @click="fetchMore" :disabled="moreFetching">
+		<button class="more _button" ref="loadMore" v-show="more" @click="fetchMore" :disabled="moreFetching">
 			<template v-if="!moreFetching">{{ $t('loadMore') }}</template>
 			<template v-if="moreFetching"><fa :icon="faSpinner" pulse fixed-width/></template>
 		</button>