Provide tools to manage and edit insights

Currently, insights (notifications and action opportunities) for learning analytics are programmed in PHP. It should be possible for a user with appropriate permissions to create and edit these in a form. This should allow a view of the model with attached insights, and editing or creating an insight should provide the following controls:

• Insight name
• Insight recipient (roles to be checked in the context of the sample)
• Target sensitivity (e.g. >= 75%)
• Delivery limit - how many times this insight will be delivered to the same recipient for this sample. Default = 3.
• Insight text with tokens similar to those used in Event notifications
• Action checkboxes for actions to provide to recipient (tokens
  • Positive actions
    • Send message to {sample} (applicable if model makes predictions about a user)
    • View messages with {sample}
    • View prediction details
    • Acknowledged
  • Negative actions
    • Not useful
    • Disable insights to me for this {sample} (student, course, etc.)
    • Disable insiglts to me for all {samples} in this {analysable}
• Link to reports - list of potential reports based on model context. Allows multiple selection.

Positive and negative actions help to measure usefulness of model and impact of actions.

Prediction follow-up functionality has been moved to MDL-65288.