BREAKING CHANGE: [Android] NativeScript no longer overwrites the horizontal/vertical alignment on the user-defined root visual element when opening it in modal dialog window (i.e. not fullscreen).
If your application logic relied on the previous behavior you need to manually set `horizontalAlignment="center"` and `verticalAlignment="middle"` on the root visual element you are showing modally.
* Do not depend on current device screen while calculating Image Asset size.
* Scale the image asset to the exact requested size.
* Process image assets natively, pass keepAspectRatio based on the stretch property and Asset options.
* Fixed the splashscreen resource name as it cannot be read when containing a dot.
* Updated the Image Asset scale and rotate logic based on the Native one.
* Make the ImageAsset size more important than the Image decode size as its more specific.
* Fixed tslint errors.
* Added filePath support in the ImageAsset constructor for iOS in order to unify it with the Android implementation, support for relative files and file not found support errors.
* Added unit tests for ImageAssets.
* Added a sample app for UI testing of image-view with ImageAsset src.
* chore: apply PR comments
* feat: add option to set a different root view at run time
* feat: expose application getRootView method
* refactor: Introduce ViewEntry interface
* fix: Respect root view rturned from launch event in Android
* refactor: getRootView() code + caching root view per activity.
* refactor: add app-root.xml in apps
* refactor: http test made async
fix livesync implementation to be compatible with 3.4 and to replace mainEntry for 4.0 when root is not Frame
some refactoring of page.ios in order to allow showing multiple modal dialogs
Fix image-source test for API 27
setupAsRootView now makes the component styleScope
set css, addCss & addCssFile makes view to be styleScopeHost which cannot be overriden later from parent
Android modals now call setupAsRootView
Small fixes on ios layouts
launch event fired in andriod too
Moved some requestLayout calls to ios files where they belongs
Remove code that moves actionBar when there is incoming call. We now depend on the autolayout to position us correctly.
_addView, _removeView won't request layout for iOS.
LayoutBase: addChild & remvoeChild will request layout.
ContentView: content change will request layout.
