Remove useless file (landing.html)

Signed-off-by: Clement Escoffier <clement.escoffier@gmail.com>
More logging when retrieving the issues from github

Signed-off-by: Clement Escoffier <clement.escoffier@gmail.com>
Fix the extension registry links

Signed-off-by: Clement Escoffier <clement.escoffier@gmail.com>