gui: Convert UI to use Fragments

Change-Id: I7269604a1da72e6b22f4bbac31c1f5561660ccf5
Refs: #2646, #2667
diff --git a/app/src/main/res/values-sw600dp/dimens.xml b/app/src/main/res/values-sw600dp/dimens.xml
new file mode 100644
index 0000000..a125d29
--- /dev/null
+++ b/app/src/main/res/values-sw600dp/dimens.xml
@@ -0,0 +1,5 @@
+<?xml version="1.0" encoding="utf-8"?>
+<resources>
+    <dimen name="default_padding_left">48dp</dimen>
+    <dimen name="default_padding_right">48dp</dimen>
+</resources>
\ No newline at end of file