Islamist motive debated in Germany after attack in Munich / Islamism in the spotlight as Germany debates Munich attack motive / Jihadist motivation in Munich attack, prosecutors say / Munich attacker was 'failed asylum seeker who shared Islamist posts before ploughing Mini into crowd injuring 28' / Munich attack suspect is 'failed asylum seeker' who 'posted Islamist content' / Germany: Munich shooter fired nine shots in 'terror attack' / Isis claims responsibility for German festival 'terror attack'