update adobe savings calculator to handle multiple packages

[kenirwin]

• right now our only calculates on student CC licenses
• what about fac/staff?
• what about acrobat only?
• can we use the same metrics for others? (e.g. faculty one-day checkouts -- the same math may not apply, calling a one-day use the equivalent of a one-month license.)
• config currently takes a string to identify the directory -- how about an array?
• and can we get it to use more human-readable output? ("Adobe Creative Cloud" instead of space-less "AdobeCreativeCloud" bc its using the directory name.