The plus and minus characters are normally not the same width in a
non-monospace font, and this made the line length change when the
diffstat display was toggled.
The square brackets are not rendered in a monospace font to ensure
that they align with the parenthesis on the same line.
Displayed in a row of the changeset summary table, underneath the list of
files. When the page is loaded, only the diff summary is displayed. The full
diffstat is only displayed when the [+] link is selected.
This allow safe caching of the pages by the browser and still display the right
amount of elapsed time upon page refresh.
If javascript is disabled, absolute time is displayed, leaving it readable.
All the templates have been updated.
