Extend context timeout window for "all" endpoint variants

[jpahm]

The "all" variants of the endpoints (i.e. CourseAll in the course controller) currently tend not to have long enough context timeouts to complete without timing out due to the large amount of data they need to supply.

This should be a relatively simple fix, which just involves increasing the timeout on these endpoints to something reasonable yet long enough for the data to be passed back consistently. This will involve some local testing.

[armansarder]

I would like to resolve this issue