fileservice_lib/action.py: * Fixed TODOs, and comments. * putfile: Added "overwrite" optional parameter. If true, overwrites, otherwise error. Note: This changes the default behaviour (used to overwrite by default). editor.js: Call to putfile has overwrite: true, as necessary to keep the old behaviour. listing.js: Comment on "new file".
Note: This commit changes the behaviour of "new file" so it has an error if the file already exists.