When loading the files in the diff viewer, the height of the row in the

file index would fluctuate. The loaded row information was slightly

taller than when it just showed the spinner.
This was mostly due to the margin-bottom of the chunk dots. That margin

was unnecessary, even for wrapping, and has been removed.
There were also some margins for the graph icons that weren't really

needed, and a min-height on the row that didn't affect anything. I've

removed all this and standardized heights and offsets through variables.

Tested in Chrome and Firefox.
I tested a diff with many files, some containing chunk dots, some not, to verify that

the heights were always consistent even without chunk dots.