Catch more errors in file watcher node.
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Tweak to Watch Node info to close #236
Added error handling to 50-file.js
Merge pull request #243 from TJKoury/change_file_node

Change to error handling in 50-file.js to pass on msg.error.
Rewrite the credentials api.
The credentials are now sended along with the flow.
The credentials are fetched on-demand and obfuscated.