index.html: Modified inner content and placement of dropdown menu
index.html: Modified inner content and placement of dropdown menu


Former-commit-id: dd1ea92618741d2f0692a39b14b78c46d4716041
neuropoly/spinalcordtoolbox,neuropoly/spinalcordtoolbox,neuropoly/spinalcordtoolbox,neuropoly/spinalcordtoolbox,neuropoly/spinalcordtoolbox,neuropoly/spinalcordtoolbox,neuropoly/spinalcordtoolbox