The first version of the Log Page introduced in
LIVY-344 displays the entire log as one block. Usually (but not always) the log consists of a stdout, stderr, and YARN Diagnostics sections. We should display these separately.
Some initial options:
1. Split the three into separate <pre> tags and have anchor links to each at the top of the page
2. Split them up into separate "tabs"
3. Either 1 or 2, but with resizable displays and scrolling.
My current plan would be 1 & 3, given the potential difficulty of 2