Add confirmation dialogs for disconnecting and stopping advertisement
of a subnet route.
Updates #10261
Signed-off-by: Sonia Appasamy <sonia@tailscale.com>
Enforcing inclusion of our OSS license at the top of .ts and .tsx
files. Also updates any relevant files in the repo that were
previously missing the license comment. An additional `@license`
comment is added to client/web/src/index.tsx to preserve the
license in generated Javascript.
Updates #10261
Signed-off-by: Sonia Appasamy <sonia@tailscale.com>