Find In should silently do nothing for untitled documents
Reject the promise if FileEntry.createWriter fails
Explain in documentation that InaccessibleFileEntries are used for untitled Documents
Clean up a stale comment about untitled documents
Rename new file/document command ID variables for clarity
Remove New File from the working set context menu
better falsey check in _getUntitledFileSuggestion
Guard against null documents in handleFileSave
Merge branch 'irichter/untitled-temp-files' of https://github.com/adobe/brackets into irichter/untitled-temp-files

Conflicts:
	src/document/DocumentCommandHandlers.js