* Fix Biometric Unlock
* Add Prompt Unlock function directly in WebViewActivity
* Added session timeout in app settings
* App is locked when resumed (after session timed out)
* When the application is locked, the screen is blurred (no quite obnoxious splash screen to look at), which allows the HA frontend to be loaded before or during unlocking
* No button needs to be touched for unlock
* When the unlock prompt is displayed, the back button close the app
* Fix issues #555 and #587
* Switch to using Kotlin in of groovy for the gradle configurations.
* Gradle file cleanup.
* Switch to using Kotlin in of groovy for the gradle configurations.
* Gradle file cleanup.
* Retrofit (and maybe others libs) requires java compile options 1.8, still backwards compatible.
* Prep for release 1.9.0-XXX
* Fix ktLint errors.