Display more data on integral representations of Galois groups.
Add warning to the user about duplicate Artin representations.
Improve import script for families of hypergeometric motives.
When downloading number fields, put the date in the file in a comment, and add magma as a download type.
Merge pull request #196 from jwj61/master

Misc. small changes to number fields, Artin reps, hypergeometric motives, and Galois groups -- see commit messages.