Add neato stats to info page

[kattjevfel]

On the old lewd we showed "Currently storing X files (Y / day on average, Z today), totaling GiB in filesize."

What needs to be done:

• count files in database
• divide filecount by storage time in days (like 90)
• count files that are made today, as in after 00:00:00.000
• combined filesize of all files in DB

show this on info page :3

[inabahare]

This has been done :3