Web UI: patch 404, 545, 546

This PR patches:

8f5620f84e16e1714b7fb98325bdafcf2c9eaae8..47960b8565208e93a3956e21374e8304d322c1c1 - exclude blank records in provision server data; closes #546
71729e3425e06b41edc38c80717a0bdd00d0563b..903524e59db0be53c066639d52cf03fcd5c6b8b7 - reload file list after edit, or delete
d4d9d916aba2ac449b82b723fb1c19ed0a5b2582 - remove user, database port, and SSH port fields from add peer; closes #545
f725f53f2e4aadd4c654425de07dc7740f891f27 - lock the add peer input fields until they're focused; closes #404

ClusterLabs / anvil