Update version.py
Merge pull request #2209 from learningequality/release-0.12.0

Release 0.12.0
fix version.py comment to make it work for windows
Prevents errors getting thrown when viewing 'Ungrouped' in non-English languages.
Removes translation of "Ungrouped" in URLs.
'Twas a silly idea in the first place.
Introduces test for "Ungrouped" bug.
Tests that "Ungrouped" works in Spanish.
Adds es.zip for control panel test in Spanish.
Merge pull request #2230 from rtibbles/ungrouped_fix

Fix for Ungrouped Bug