- add a default thumb size value (125x90px)
- improve private vertical bar visual, especially with thumbnails
- translations
- add a sync thumbs button in tool and empty picwall page
- fixes WT download mode in JSON config
* requires PHP 5.6
* use blazy on linklist since a lot more thumbs are retrieved
* thumbnails can be disabled
* thumbs size is now 120x120
* thumbs are now cropped to fit the expected size
Fixes#345#425#487#543#588#590