Help, print, and exception messages will now all be translated. I
did not find any logging messages.
Motivation for this change:
    1. A patch for shell.py recently added i18n, we should be
       consistent with the additions from v1.
    2. I noticed a patch on v1/shell.py that had reviewers suggesting
       to use i18n, instead of applying it to one message lets do it
       for the whole file.
Change-Id: Ifd1bf25020c5f180a074165e2634a105bcbd4ed8
		
	
		
			
				
	
	
		
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other:
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  - Use i18n for v1/shell.py
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