CLI "storage" and "addresses"

[kostysh]

• lpms-server Added routes: /api/storage/file; /api/storage/metadata; Added StorageService with IPFS API support
• lpms-server Fixed bootstrap service; Added check for existence of default user
• lpms-server Added helmet middleware with express security related tweaks; Improved CORS configuration
• lpms-cli Added commands: "addresses", "storage"; Updated README.md with commands examples

REQUIRES DEPENDENCIES UPDATE. Please run `yarn bootstrap from the root of the repository.

[mfw78]

Merge conflicts are resolved and resubmitted in PR #65