* (Android) Get rid of double bangs by using Kotlin view binding
Instead of holding a nullable reference to the WebView, we are now
accessing the WebView using the view binding utility of Kotlin's
Android Extensions.
Further reading:
https://kotlinlang.org/docs/tutorials/android-plugin.html
* (Android) Enable WebView debugging in debug builds
This enables debugging the app's WebView using Chrome's DevTools.
https://developers.google.com/web/tools/chrome-devtools/remote-debugging/webviews
* (Android) Make MainActivity.kt adhere to common Kotlin conventions
* (Android) Update dependencies and improve formatting of Gradle files
This updates the Kotlin plugin to 1.3.21 and the Gradle plugin to 3.3.2
* (Android) Remove unnecessary ConstraintLayout container
Layout files should generally have as few nested layers as possible,
because every layer affects the performance.
* (Android) Use JSONObject class to construct a JSON string
It is way safer to construct a JSON string using classes that are
meant for doing that, instead of concatenating raw strings.
* (Android) Suppress JavaScript lint warning
* (Android) Use Kotlin string templates instead of concatenating strings
* (Android) Add missing SuppressLint import
To do so, we clear the webview history once the login process is complete so that the intermediate redirect urls used by the login process are not in the history.
Also, update the versions of some of the libraries we use.
* Implement the mechanics of fxa login on android, but don't show ui for it yet. Also, scopedKeys are not yet implemented.
* Hopefully fix the package-lock conflict?
* WIP on android scoped keys
* Finish implementing login.
* created android/user.js to handle android logins
* Fix #877 Implement Start page (Empty State) Design
* Update some kotlin and android sdk things, and update to the latest code in vnext
* Begin implementing the card ui which shows after uploading.
* Implement a progress bar.
