report MIxS/SNTC enum differences

[turbomam]

Implementation:

• currently printing to console in a test
• manually saved a static report

@turbomam's recommendations:

• cur_land_use: add the parenthetical portion (e.g. tulips) of horticultural plants back in for the sake of consistency. We could revisit whether we want to display "parenthetical portions" at all in the future
• env_package: SNTC only has soil, so the MIxS only set looks large. Leave as-is.
• tillage: the MIxS terms are all lower case. The SNTC tillage permissible terms are capitalized, unlike all of the other SNTC permissible terms. Switch to lower case for consistency.

Is that OK with you, @mslarae13 ?

[turbomam]

I made the changes I suggested above

[pkalita-lbl]

Mark said he made the changes. Closing.