Merge pull request #10 from MarkWatkins2014/master

Change http:// link to github, from prior googlecode
check for the poles in tensor products
Merge branch 'master' of https://github.com/mjd95/lmfdb into mine

* 'master' of https://github.com/mjd95/lmfdb:
  change link to github, not googlecode
Merge branch 'master' of http://github.com/MarkWatkins2014/lmfdb into mine

* 'master' of http://github.com/MarkWatkins2014/lmfdb:
  delete now-useless line
  Append trailing zeros to euler_factor_to_list
self dual for gal reps
Fix bug with L and D not same length