Create hook for handling fetching sections and related errors

[ssciolla]

There are at least three features using this pattern, and I agree that it could be refactored to be DRYer. A custom hook like useSections capturing the useEffect logic could be a solution, though it wouldn't handle the JSX repetition.

const [sections, sectionsLoading, sectionsError, reset] = useSections(course.id)

"For Future/Icebox: I feel that the L60-L78, can be extracted to as separate component and can be reused in features like where ever the sections list is needed."

Originally posted by @pushyamig in #270 (comment)