Merge pull request #141 from mjd95/master

formatting display of Siegel mod forms
EC search results page: no download links. fixes #145
Basic layout for tensor products pages
Added input boxes for objects we're taking tensor products of
Renamed tensor products folder
Merge branch 'master' of https://github.com/mjd95/lmfdb
Now have tensor_products module and basic functionality for product of ell curve and dirichlet char