MDL-42364 core_group: Coding style fix: group/autogroup.php
MDL-42364 core_group: Coding style fix: group/autogroup_form.php
MDL-42364 core_group: Coding style fix: group/members.php
MDL-42364 core_group: Coding style fix: group/overview.php
MDL-42364 core_group: Coding style fix: group/index.php