Need to add blocks to the xstatistics module

Hello Ber

I added two blocks to the module. They are the exact same content that appears in the pages, but in a block.

The reason for this is that I have a block from Statistics Trends module that is only visible to the admin, and gives nice and useful reporting at-a-glance.

By adding those two blocks, I now have more useful reports when I am logged in as admin.

The only possible negative impact is that I had to shorten the descriptions a bit (removed "Total amount of ").

The modified copy is attached. If you want me to commit it, let me know.