Fixed issues with re-authenticating Bitbucket repos and automatic preview rebuilds upon GitLab approvals.
Proxied Tugboat pages now include a Content-Security-Policy header.
Added additional security features and made Tugboat CLI errors a bit friendlier to read.
Added anti-clickjacking headers and a fresh round of dependency updates.
Fixed dashboard 404 pages returning wrong status codes and made OAuth user radio buttons selectable during repo authentication.
