xF1 Add-on [SolidMean] ForumBackup Dropbox Upload 1.1.0

08/23/2016
- Updated the DropBox SDK to use API v2. This library comes from https://github.com/kunalvarma05/dropbox-php-sdk, and is currently unsupported by DropBox.
- Updated PHP requirements to PHP 5.5 to support this new API version.
- After updating to this version, administrators should delete the "dropbox-sdk" directory from the xfroot/library/SolidMean/ForumBackup/DropBox/ directory if it exists.