Review of 1.0.3: names a snapshot cannot hold, restore-directory errors under salvage, browse speed

- Leave out and report a file or folder whose name a snapshot cannot hold
- A staging write failure stops a full restore under --salvage
- Browse reuses its repository; empty folders read along with the entries
- Keep leases alive while empty folders are created; exact-prefix empty folder is the target
- Clean up tables that were partly created or before the transaction started
- Bin: no empty message after a read error; longer pages

src/components/Bin.vue

@@ -17,7 +17,7 @@
 			</template>
 			<p class="ngb-muted">{{ t('ng_backup', 'This can take a while: every removed restore point is read from the location.') }}</p>
 		</div>
-		<NcNoteCard v-else-if="empty" type="info">{{ t('ng_backup', 'The bin is empty.') }}</NcNoteCard>
+		<NcNoteCard v-else-if="empty && !error" type="info">{{ t('ng_backup', 'The bin is empty.') }}</NcNoteCard>
 
 		<template v-for="target in status.targets" :key="'trash' + target.id">
 			<div v-if="trash[target.id]?.length" class="ngb-trash">