[Merge] lp:~robru/phablet-tools/citrain into lp:phablet-tools

[Robert Bruce Park]

Ok ogra, citrain-purge added, and I also added printf statements so that the users don't need to type 3-digit silo numbers anymore (yay less typing!) 

Please approve ;-)
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https://code.launchpad.net/~robru/phablet-tools/citrain/+merge/219268
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