oncoprint tool: choice between custom driver annotations and oncokb annotations unclear

[inodb]

We currently show an info box like this:

But we still sometimes get questions about how to annotate with OncoKB rather than having to input it. I was thinking we can maybe change this:

to:

• Load example
• Load custom driver example
• View Data Format

That way it is more obvious that the first option should just default to annotating with OncoKB. Logic could be something like if there are no custom drivers in the input, then use OncoKB

Also maybe good to remove "data" in all the steps