update php-fpme to php-fpm

The script errors out when I select one of the nginx options for a web server because there is no php-fpme in the repositories. Another error I'm experiencing is with the powerpill json configuration. I'm not a sed expert, but I've run the script on two different computers and both times it exits with a parse error because it doesn't finish the country (United States) argument.

<snip>
"reflector": {
    "args": [
      "--protocol",
      "http",
      "--country",
      "United 
      "--latest",
      "50"
    ]
  },
</snip>

The last error is that it fails silently if a partition is selected for formatting that already contains a file system.