work in progress on ec_url
the wrong url in the search form gets corrected
Merge branch 'ec_url_selfcorrect' of github.com:AurelPage/lmfdb into ec_url
Elliptic curve URL improvements:

  - search by Weierstrass equation now works again
  - lots of cosmetic changes in error-handling and reporting
  -  test suite updated
work in progress on ec_url
the wrong url in the search form gets corrected
Elliptic curve URL improvements:

  - search by Weierstrass equation now works again
  - lots of cosmetic changes in error-handling and reporting
  -  test suite updated
Merge branch 'ec_url' of github.com:JohnCremona/lmfdb into ec_url
additions to ec upload scripts
ec: changed sha search to use new integer values
ec: added new tests for sha search
Merge pull request #200 from JohnCremona/sha

EC Sha and URL improvements