tl;dr support #9
Description
Some people write really long snippets, so it would be nice to grab the first few lines as a "too long; didn't read" version of the snippets with the high-level of what the person did. E.g. I want to list all the diffs I added that week so that in the future I can look back and see what I did, but other people who aren't on my team probably don't want that level of detail, and want to be able to skim through the snippets.
This should be accompanied by some expand-all and collapse-all buttons.