revert mmlu tasks

lm_eval/tasks/mmlu/default/mmlu_elementary_mathematics.yaml

 "dataset_name": "elementary_mathematics"
 "description": "The following are multiple choice questions (with answers) about elementary\
   \ mathematics.\n\n"
+"group": "mmlu_stem"
+"group_alias": "stem"
 "include": "_default_template_yaml"
 "task": "mmlu_elementary_mathematics"
-"task_alias": "elementary mathematics"
+"task_alias": "elementary_mathematics"

lm_eval/tasks/mmlu/default/mmlu_formal_logic.yaml

 "dataset_name": "formal_logic"
 "description": "The following are multiple choice questions (with answers) about formal\
   \ logic.\n\n"
+"group": "mmlu_humanities"
+"group_alias": "humanities"
 "include": "_default_template_yaml"
 "task": "mmlu_formal_logic"
-"task_alias": "formal logic"
+"task_alias": "formal_logic"

lm_eval/tasks/mmlu/default/mmlu_global_facts.yaml

 "dataset_name": "global_facts"
 "description": "The following are multiple choice questions (with answers) about global\
   \ facts.\n\n"
+"group": "mmlu_other"
+"group_alias": "other"
 "include": "_default_template_yaml"
 "task": "mmlu_global_facts"
-"task_alias": "global facts"
+"task_alias": "global_facts"

lm_eval/tasks/mmlu/default/mmlu_high_school_biology.yaml

 "dataset_name": "high_school_biology"
 "description": "The following are multiple choice questions (with answers) about high\
   \ school biology.\n\n"
+"group": "mmlu_stem"
+"group_alias": "stem"
 "include": "_default_template_yaml"
 "task": "mmlu_high_school_biology"
-"task_alias": "high school biology"
+"task_alias": "high_school_biology"

lm_eval/tasks/mmlu/default/mmlu_high_school_chemistry.yaml

 "dataset_name": "high_school_chemistry"
 "description": "The following are multiple choice questions (with answers) about high\
   \ school chemistry.\n\n"
+"group": "mmlu_stem"
+"group_alias": "stem"
 "include": "_default_template_yaml"
 "task": "mmlu_high_school_chemistry"
-"task_alias": "high school chemistry"
+"task_alias": "high_school_chemistry"

lm_eval/tasks/mmlu/default/mmlu_high_school_computer_science.yaml

 "dataset_name": "high_school_computer_science"
 "description": "The following are multiple choice questions (with answers) about high\
   \ school computer science.\n\n"
+"group": "mmlu_stem"
+"group_alias": "stem"
 "include": "_default_template_yaml"
 "task": "mmlu_high_school_computer_science"
-"task_alias": "high school computer science"
+"task_alias": "high_school_computer_science"

lm_eval/tasks/mmlu/default/mmlu_high_school_european_history.yaml

 "dataset_name": "high_school_european_history"
 "description": "The following are multiple choice questions (with answers) about high\
   \ school european history.\n\n"
+"group": "mmlu_humanities"
+"group_alias": "humanities"
 "include": "_default_template_yaml"
 "task": "mmlu_high_school_european_history"
-"task_alias": "high school european history"
+"task_alias": "high_school_european_history"

lm_eval/tasks/mmlu/default/mmlu_high_school_geography.yaml

 "dataset_name": "high_school_geography"
 "description": "The following are multiple choice questions (with answers) about high\
   \ school geography.\n\n"
+"group": "mmlu_social_sciences"
+"group_alias": "social_sciences"
 "include": "_default_template_yaml"
 "task": "mmlu_high_school_geography"
-"task_alias": "high school geography"
+"task_alias": "high_school_geography"

lm_eval/tasks/mmlu/default/mmlu_high_school_government_and_politics.yaml

 "dataset_name": "high_school_government_and_politics"
 "description": "The following are multiple choice questions (with answers) about high\
   \ school government and politics.\n\n"
+"group": "mmlu_social_sciences"
+"group_alias": "social_sciences"
 "include": "_default_template_yaml"
 "task": "mmlu_high_school_government_and_politics"
-"task_alias": "high school government and politics"
+"task_alias": "high_school_government_and_politics"

lm_eval/tasks/mmlu/default/mmlu_high_school_macroeconomics.yaml

 "dataset_name": "high_school_macroeconomics"
 "description": "The following are multiple choice questions (with answers) about high\
   \ school macroeconomics.\n\n"
+"group": "mmlu_social_sciences"
+"group_alias": "social_sciences"
 "include": "_default_template_yaml"
 "task": "mmlu_high_school_macroeconomics"
-"task_alias": "high school macroeconomics"
+"task_alias": "high_school_macroeconomics"

lm_eval/tasks/mmlu/default/mmlu_high_school_mathematics.yaml

 "dataset_name": "high_school_mathematics"
 "description": "The following are multiple choice questions (with answers) about high\
   \ school mathematics.\n\n"
+"group": "mmlu_stem"
+"group_alias": "stem"
 "include": "_default_template_yaml"
 "task": "mmlu_high_school_mathematics"
-"task_alias": "high school mathematics"
+"task_alias": "high_school_mathematics"

lm_eval/tasks/mmlu/default/mmlu_high_school_microeconomics.yaml

 "dataset_name": "high_school_microeconomics"
 "description": "The following are multiple choice questions (with answers) about high\
   \ school microeconomics.\n\n"
+"group": "mmlu_social_sciences"
+"group_alias": "social_sciences"
 "include": "_default_template_yaml"
 "task": "mmlu_high_school_microeconomics"
-"task_alias": "high school microeconomics"
+"task_alias": "high_school_microeconomics"

lm_eval/tasks/mmlu/default/mmlu_high_school_physics.yaml

 "dataset_name": "high_school_physics"
 "description": "The following are multiple choice questions (with answers) about high\
   \ school physics.\n\n"
+"group": "mmlu_stem"
+"group_alias": "stem"
 "include": "_default_template_yaml"
 "task": "mmlu_high_school_physics"
-"task_alias": "high school physics"
+"task_alias": "high_school_physics"

lm_eval/tasks/mmlu/default/mmlu_high_school_psychology.yaml

 "dataset_name": "high_school_psychology"
 "description": "The following are multiple choice questions (with answers) about high\
   \ school psychology.\n\n"
+"group": "mmlu_social_sciences"
+"group_alias": "social_sciences"
 "include": "_default_template_yaml"
 "task": "mmlu_high_school_psychology"
-"task_alias": "high school psychology"
+"task_alias": "high_school_psychology"

lm_eval/tasks/mmlu/default/mmlu_high_school_statistics.yaml

 "dataset_name": "high_school_statistics"
 "description": "The following are multiple choice questions (with answers) about high\
   \ school statistics.\n\n"
+"group": "mmlu_stem"
+"group_alias": "stem"
 "include": "_default_template_yaml"
 "task": "mmlu_high_school_statistics"
-"task_alias": "high school statistics"
+"task_alias": "high_school_statistics"

lm_eval/tasks/mmlu/default/mmlu_high_school_us_history.yaml

 "dataset_name": "high_school_us_history"
 "description": "The following are multiple choice questions (with answers) about high\
   \ school us history.\n\n"
+"group": "mmlu_humanities"
+"group_alias": "humanities"
 "include": "_default_template_yaml"
 "task": "mmlu_high_school_us_history"
-"task_alias": "high school us history"
+"task_alias": "high_school_us_history"

lm_eval/tasks/mmlu/default/mmlu_high_school_world_history.yaml

 "dataset_name": "high_school_world_history"
 "description": "The following are multiple choice questions (with answers) about high\
   \ school world history.\n\n"
+"group": "mmlu_humanities"
+"group_alias": "humanities"
 "include": "_default_template_yaml"
 "task": "mmlu_high_school_world_history"
-"task_alias": "high school world history"
+"task_alias": "high_school_world_history"

lm_eval/tasks/mmlu/default/mmlu_human_aging.yaml

 "dataset_name": "human_aging"
 "description": "The following are multiple choice questions (with answers) about human\
   \ aging.\n\n"
+"group": "mmlu_other"
+"group_alias": "other"
 "include": "_default_template_yaml"
 "task": "mmlu_human_aging"
-"task_alias": "human aging"
+"task_alias": "human_aging"

lm_eval/tasks/mmlu/default/mmlu_human_sexuality.yaml

 "dataset_name": "human_sexuality"
 "description": "The following are multiple choice questions (with answers) about human\
   \ sexuality.\n\n"
+"group": "mmlu_social_sciences"
+"group_alias": "social_sciences"
 "include": "_default_template_yaml"
 "task": "mmlu_human_sexuality"
-"task_alias": "human sexuality"
+"task_alias": "human_sexuality"

lm_eval/tasks/mmlu/default/mmlu_international_law.yaml

 "dataset_name": "international_law"
 "description": "The following are multiple choice questions (with answers) about international\
   \ law.\n\n"
+"group": "mmlu_humanities"
+"group_alias": "humanities"
 "include": "_default_template_yaml"
 "task": "mmlu_international_law"
-"task_alias": "international law"
+"task_alias": "international_law"