Fix documentation of the internal API
Add the drop database endpoint
Move generic content from the index page to the master template
Add footer with copyright, license and source information in the footer
Delete the get_all() method in favor of a generic search one and add the cnt_unique_ip

- The results get_all() method can be gathered using the search() method with the
appropriate arguments
- The search() method is more flexible and can return more information
- The cnt_unique_ip returns a count of the unique IP present in the database
Add a get_stats() function in the internal API

This method gathers some statistics about the current usage of faitout
Add the stats page

This page displays some statistics about the usage of faitout