FIX: Update minimum value for Hours spent to minutes

[jtucholski]

Describe the bug

When viewing the courses tables on the Learning Path dashboard or My Progress screen the name of the column is Hours Spent but the empty value shows as 0 secs.

This issue seems weird, perhaps because it wouldn't be common to know the number of seconds that someone has spent in a course. We should update the column name to Time Spent

The display values for the column should support minutes and hours. Here's an example layout then.

Course	Status	Time Spent
Botany 101	In Progress	5 minutes
College Algebra	In Progress	25 hours
Onboarding	Completed	3 hours
Computer Science	In Progress	1 minute

If feasible, this table should support sorting by Time Spent. Here's how it would look in Descending order.

Course	Status	Time Spent
College Algebra	In Progress	25 hours
Onboarding	Completed	3 hours
Botany 101	In Progress	5 minutes
Computer Science	In Progress	1 minute

Additional notes:

• Display minutes up until 1 hour
• After 1 hour only display hours

Screenshots