* Add intro skipper support
* Fix checking for 404
* Add back missing Intro class and dependencies due to rebase
* Add preference
* Clean up visibility logic
* Update skip intro button design
* Add proguard file to keep Serializable classes
* Move introCheck to a separate Runnable and fix Runnables are never cleaned up
* Simplify check before starting runnable
Co-authored-by: Jarne Demeulemeester <jarnedemeulemeester@gmail.com>
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