Fix share modal
Fix share modal

Fixes #545

brndnmtthws/dcos-website,dcos/dcos-website,ahoskins/dcos-website,brndnmtthws/dcos-website,dcos/dcos-website,dcos/dcos-website,ahoskins/dcos-website,ahoskins/dcos-website,brndnmtthws/dcos-website,ahoskins/dcos-website,dcos/dcos-website,brndnmtthws/dcos-website