Fix SparseAdagrad for indices.ndim>1

Summary:
Same fix as https://github.com/caffe2/caffe2/pull/249, but for SparseAdagrad.

Also update the tests for both ops to test this functionality.
Closes https://github.com/caffe2/caffe2/pull/675

Differential Revision: D5148750

Pulled By: akyrola

fbshipit-source-id: d30b722429bc547fd53400c1a29e4ee9e2e6ed18
3 files changed
tree: 45cadde75b544cc0be626358c0ecf4b11bc20f70
  1. .travis/
  2. caffe/
  3. caffe2/
  4. cmake/
  5. docs/
  6. scripts/
  7. third_party/
  8. .Doxyfile
  9. .Doxyfile-c
  10. .Doxyfile-python
  11. .gitignore
  12. .gitmodules
  13. .travis.yml
  14. appveyor.yml
  15. CMakeLists.txt
  16. LICENSE
  17. Makefile
  18. PATENTS
  19. README.md
  20. release-notes.md
README.md

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