* Require polyfill for mbstring and iconv
* remove mbstring methods from upgrade.php
* remove checks for some php extensions
* deprecate Common::mb_* methods, as we can directly use mb_* functions instead
* updates expected test files
* Directly use mb_* methods in favor of Common::mb_*
* Update expected screenshot
Co-authored-by: diosmosis <diosmosis@users.noreply.github.com>
* Require new major release of matomo/device-detector (instead of piwik/device-detector)
* Adjust classname
* fix cache class
* update test files
* some more code adjustments
* update submodule
* Create a file cache for parsed device info
* Tests for device detection file cache
* Move device detector cache into separate plugin
* Move WarmDeviceDetectorCache to separate plugin
* Use DI to get the DeviceDetectorFactory
* add device detector cache as a submodule
* update submodule
* update submodule
* fix BC break
* System test, deal with useragent strings > 500 characters long
* update submodule
* Update submodule