column to .col & sass specific cleanup

So in the same vein as converting ico to .ico, we should probably do the same with "column".

I'm proposing changing it to .col.  But if you would rather keep it as .column, or .c to match the width classes, just let me know.

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convert .c# over to a sass list / @each directive to streamline output of classes.

convert "column" element over to .col class

convert css comments to sass comments in navbar file.