Refactored color module (and dependent code)

[Zearin]

Started to move a few color-related methods from the classes in reporting.py to color.py…then I realized, “If I’m going to do this much, I might as well make the color module be easier to use for all of PyVows.”

So, I added some convenience methods to the colors module for the main ANSI colors.

After updating the dependent code (mostly in reporting.py, teeny bit in console.py), the result looks much nicer. Easier to read, too.

w00+! :)

[heynemann]

Hi man, since you are now a committer no point in reviewing this pull request (because it can't be automatically merged anymore).

[Zearin]

Gonna reopen under a new request.

[Zearin]

Merged from #62.