add confirmation and security to installer
add confirmation and security to installer


Former-commit-id: 760e0cfc0aaabc66b8e3c611e8133a0838c3a580 [formerly 4cceeb79a9b02b4ea8a01441edad6c97af7bd12a]
Former-commit-id: 0ddfc293dd060ed4a0e866d5c51ccdf13f14967f
Former-commit-id: 7a790944a8da1db8a6a39b5945d42f35ffad9a5f
neuropoly/spinalcordtoolbox,neuropoly/spinalcordtoolbox,neuropoly/spinalcordtoolbox,neuropoly/spinalcordtoolbox,neuropoly/spinalcordtoolbox,neuropoly/spinalcordtoolbox,neuropoly/spinalcordtoolbox