Fix layout on small screens

res/layout/fragment_enter_session_id.xml

@@ -17,7 +17,7 @@
         android:layout_height="wrap_content"
         android:layout_marginLeft="@dimen/large_spacing"
         android:layout_marginRight="@dimen/large_spacing"
-        android:textSize="@dimen/large_font_size"
+        android:textSize="19sp"
         android:textStyle="bold"
         android:textColor="@color/text"
         android:text="Link your device" />
@@ -28,7 +28,7 @@
         android:layout_marginLeft="@dimen/large_spacing"
         android:layout_marginTop="6dp"
         android:layout_marginRight="@dimen/large_spacing"
-        android:textSize="@dimen/small_font_size"
+        android:textSize="14sp"
         android:textColor="@color/text"
         android:text="Navigate to "Settings" > "Devices" > "Link a Device" on your other device and then enter your Session ID here to start the linking process." />