Dynamic snack bars

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* Added dynamic snack bars that can be made from any reagent. Maximum volume of 10 units.

![snackbars](https://cloud.githubusercontent.com/assets/4912533/2835331/d06ac5bc-cfe7-11e3-88b3-7fb34a6ec86b.png)

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* Added a SnackBar Machine to the kitchen freezer room, used for making -- you guessed it, snack bars.

![snackbars2](https://cloud.githubusercontent.com/assets/4912533/2835336/e6008cfe-cfe7-11e3-97c0-fce3f23f0d7d.png)

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* Increased the size of the kitchen and moved things around a bit to make room for the new machine

![snackbars3](https://cloud.githubusercontent.com/assets/4912533/2835343/fc911984-cfe7-11e3-84e1-f3440578a88d.png)

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* Made the ChemMaster and similar machines visually show the reagents inside them on their screen by a mix of their colors

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* Added a plant bag for the Chef near the SmartFridge for transporting grown foods from the SmartFridge to the grinder and other places

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