As an experiment, make the sections of the summary to be toggable. This
can help readability, although it's unclear if it's worth the additional
complexity and could be removed later.
This patch adds the age of the repository to the index view, using javascript
to give a nice human string for the age.
When javascript is not available, the element remains hidden.
Signed-off-by: Alberto Bertogli <albertito@blitiri.com.ar>