Added translation for Vietnamese

Vietnamese (vi).
Tiếng Việt
add new site - eRupublik

eRepublik is a web MMO strategy. Difficulty is hard because they require
to contact support in order to delete an account.
Added Booking.com
Add Lumi
Update sites.json

Some fixes on Spanish translation
Update index.html
Added Turkish (Türkçe)

Added Turkish (Türkçe).
Translated by Erman Sayın.
- load only once the contributors from github
- show the avatar instead only the name of contributors
Merge conflicts, errors, vietnamese flags, css
Merge branch 'master' of https://github.com/pborzenkov/justdelete.me
Merge branch 'master' of https://github.com/floriandejonckheere/justdelete.me into floriandejonckheere-master
Merge branch 'master' of https://github.com/nedrichards/justdelete.me into nedrichards-master
Merge branch 'patch-6' of https://github.com/Rockbdn/justdelete.me into Rockbdn-patch-6
Moved + espanol to dev.php
Merge conflicts, css, list
Merge branch 'master' of https://github.com/timverhaegh/justdelete.me into timverhaegh-master
Added contributors to dev for testing
Added turkish to static gen
Static for new languages
Added Arabic translation