Pages summary and graph #2389

Actually Piwik provides a table with a hierarchical list of all pages and it's count of pageviews, unique pageviews and so on.
Unfortunately this table doesn't have a summary of all these columns so it's impossible to see how many pageviews per time range you have.

Further it were great to have a graph of pageviews equivalent to the graph of visitors.

Thanks
Simon

#534 and #756