List of updates for Solid REPL deployment

[davedbase]

• Change labels to tags
• Make tags searchable
• Adjust shape of file JSON to {name: string, type: string, source: string}
• Add a patch endpoint so just file data may be sent
• Add Solid revisions to track history
• Add PATCH for upserting REPL
• Add PATCH for upserting files /repl/[:id]/files/[:filename]
• Add DELETE for certain files
• Add validation for file sizes (listed below)

REPL validation additions:

• Maximum 10 files per REPL
• Maximum file size of 500kb
• Maximum lifetime of 1000 REPLs per user (could have roles added so that admin users have no limitations)