* Use gtk file dialog on Ubuntu 14.04 in AppImage
* Fix caching in appimage actions
* Use test api id in test appimage action
* Omit Qt flags that set to default values in appimage action
* Synchronize appimage ffmpeg arguments with generic linux one
* Synchronize move artifact step in appimage release action with test appimage action
* Install as more libraries as possible into /usr/local in AppImage actions
* Use configure.sh in appimage actions
* Add fcitx plugin to appimage
* Add AV1 support to appimage
* Add missing sudo in appimage actions
* Fix step names in appimage actions
* Ignore all .md files in appimage action
* Update Qt to 5.12.8 in appimage action
