Localization by IP and italian localization

Added localization system by IP and italian localization
Site difficulty in sites.json now is:
0 for easy
1 for medium
2 for hard
3 for impossible

Example:

{
"name": "9GAG",
"url": "https://9gag.com/member/delete",
"difficulty": "0",
"notes": "Login to your account, go to parameters, click Delete my
account. Confirm by clicking I want to delete my account. And again by
clicking Delete my 9GAG account.",
"notes_it": "Logga il tuo account, vai su parameters, clicca Delete my
account. Conferma cliccando I want to delete my account. E ancora
cliccando Delete my 9GAG account."
},

/inc/script.js no more needed i moved the script inside dev.php to echo
php localization

Parent
https://github.com/rmlewisuk/justdelete.me/pull/144
add Zurker
Revert "Localization by IP and italian localization"

This reverts commit 8a82ee240173278cb51865791ad38c6efdfd5c10.
Merge branch 'master' of https://github.com/solneman/justdelete.me into solneman-master
Merge remote-tracking branch 'upstream/master'
Implement language switcher

Change language without refreshing page
New file: definitions.json

To add notes for a language add this line to site in sites.json
> "notes_it": "Logga il tuo account, vai su parameters, clicca Delete my
account. Conferma cliccando I want to delete my account. E ancora
cliccando Delete my 9GAG account."

If site note not exists in the language the user choose it shows EN note
It also saves a cookie containing the language choosed for future site
visits
Fixes and merge
Removed arrow css
GoSquared flags, updated gb to en, updated readme, licence and contributing
Finished translation and option to switch to Italian. Move some scripts, cleaned up CSS. Loads stuff.
Added flags from GoSquared. Included JS Dropdown plus italian static
Removed old language switcher code
Updated static for completeness