Chevereto v3.11.0

[Rodolfo]

Chevereto 3.11.0 (2018-08-22)
- Added SEO friendly album and image URLs
- Added local storage (virtual external servers)
- Added tool to migrate local image records to local storage
- Added PUP support for WoltLab forums

Affected files and folders (from 3.10.18)
- app/app.php
- app/loader.php
- app/install/
- app/lib/
- app/routes/
- app/themes/Peafowl/
- app/vendor/jbroadway
- lib/
- sdk/

Check README.txt file and http://chevereto.com/docs for install or update instructions.