INST: install_sct: moved miniconda and wheel to dropbox (UNFINISHED)
INST: install_sct: moved miniconda and wheel to dropbox (UNFINISHED)

Former-commit-id: 060dd288fe79c2c5580944229366c4e68ce3a728 [formerly cea076dc7f36b94718f8994476a81c9989740ee9]
Former-commit-id: 604680d31478abd3a5ffef6394e390e981d9e58b
Former-commit-id: a3e48ba6c8380ab0249f6968817f1f9bd1cac997
neuropoly/spinalcordtoolbox,neuropoly/spinalcordtoolbox,neuropoly/spinalcordtoolbox,neuropoly/spinalcordtoolbox,neuropoly/spinalcordtoolbox,neuropoly/spinalcordtoolbox,neuropoly/spinalcordtoolbox