add basic document validations for all report_components collections

[DowntonCrabby]

Basic document validation includes:

• required fields
• basic document structure for nested documents
• data types for all fields

document validations should be in place for all of the report component collections:

• [x] controlled_language_tags
• [x] follow_up_actions
• [x] metrics
• [x] module_groups
• [x] modules
• [x] reports

[DowntonCrabby]

check that all current documents pass validation:

• [x] controlled_language_tags
  • [x] follow_up_actions
  • [x] metrics
• [x] module_groups
• [x] modules
• [x] reports