Previously there was no space between the title and the closed indicator.
Also refactor MergeInfo -> PrInfo. Reviewed-by: Alyssa Ross <hi@alyssa.is> Tested-by: Alyssa Ross <hi@alyssa.is>
The main issue was that the license header from the tree template was being repeated in the generated HTML every time it was included. Use an askama comment to avoid that. Additionally, reduce the amount of unnecessary whitespace generated a bit.