[ALOY-252] Make tss file commas between items optional
|Alloy 0.3.5, 2013 Sprint 02
While this seems like a simple task, our current parsers rely on the style being able to be parsed by the uglifyjs AST parser. Removing the commas breaks this first initial step before we pass it to the JSON parser. It shows us a larger problem in that we should probably have a complete parsing expression grammar for TSS files. This will allow us to account for more than just commas, but also comments and things like that.