New models chosen and rag docs updated

Clean up: fix significant layer threshold to 50%, remove unused logit lens parameter, remove certainty calculations

Fix norm_selection type mismatch and ensure norm_parameters are always selected - Changed auto-selection to return list instead of string - Updated run_analysis to handle norm_patterns as list - Added norm_parameters requirement to Run Analysis button

Using final layer output instead of mlp for simpler computation

Added model config for automatic model parameter detection