Required tag for remote repository doesn't work.

For online installers, if the required tag for remote repository is set to 'false', it should allow the user to continue the installation even if the remote server is unreachable.

Currently, after the installer has tried and failed to connect with the server, an error is prompted to the user. From this error user can either choose to cancel or retry. If cancel is clicked, the installer will close and leave the application uninstalled.

This makes it impossible to create hybrid installers ( = some packages are downloaded during the installation, if the server is available. Otherwise those server side packages are left out of the installation).