By Kirstin Ridley LONDON (Reuters) – A London judge has told Kazakh mining company ENRC, its former legal adviser Dechert and the UK Serious Fraud Office (SFO) to consider mediation to end bitter litigation over events that led to a near 10-year criminal investigation. Despite ruling in May that former veteran Dechert partner Neil Gerrard had grossly betrayed his own client and former senior SFO officers had behaved with bad faith, High Court Judge David Waksman suggested all sides call a truce. “Notwithstanding what’s happened in the past and the serious allegations … I can certainly see th…