Files API returns Internal Server Error for incorrect class names

[davidcorbin]

Expected Behavior

Should return a human readable error like Course not found.

Actual Behavior

Currently returns

{
    "date": 123412341234,
    "message": "Internal server error"
}

Steps to Reproduce the Problem

1. Send a GET request to the endpoint with a malformed class name: http :8080/1/class/BIOL101/files
2. Returns an Internal server error

Specifications

• Version: Latest (0.3 SNAPSHOT)
• Platform: All

[mitchharvey]

also happens with homework endpoint

[mitchharvey]

This is because right now the server is set to return a internalServerError exception when the course code has the wrong format