I was using the stats and it feels that the stat average was useless in that form since the line is always at the same position no matter what is the value.
So I deleted that line and added the average in the title. It is way more useful this way.
I updated some translations both on i18n files and on http://i18n.freshrss.org
Before, if the average was equal to 0, it was displayed on the graph but the label was not displayed.
Now, the label is displayed.
Conflicts:
app/views/stats/index.phtml
Before we could choose the feed in the statistics only from the feed options in the main view. Now with the new drop-down list, it is possible to choose it from the statistics page.
The rendering needs to be polished to be nicer.