Notes app + bug fixes

A new app and a few bug fixes from the previous major rewrite in v0.14.0.

New apps:

• notes

Features:

• ipfs metrics for S3 calls, bitswap and kademlia bandwidth
• decimal storage sizes

Optimisations:

• cache peer id in AuthedStorage
• inline block request authoriser (no separate allow listener)
• block aggressive bitswap peers
• don't retrieve blocks to auth a bitswap request for them

Fixes:

• timezone for block auth generation
• use bare peer id in bat auth
• always persist generated ipfs identity
• make sure block metadata db is populted for file blockstores also
• handle empty block files
• filter blocks of wrong type in listing blockstore

Release commit:
web-ui/163f59fcbbff6e3cf2814de985b7bba5c0585e97