Completely rebase app to be buildable by source (Fresh start)

Fork this repo at this stage to fork Paperboard without Paperboard
features.
diff --git a/settings.gradle b/settings.gradle
new file mode 100644
index 0000000..e7b4def
--- /dev/null
+++ b/settings.gradle
@@ -0,0 +1 @@
+include ':app'