Rotating the device closes the custom pop up for entering numbers, potentially deleting the numbers.

[GoogleCodeExporter]

I am reporting this bug as a part of a research project at the University of 
Texas at Austin. Please accept the bug if it is valid.

What steps will reproduce the problem?
1. In the pop mode, select a cell to enter numbers.
2. Under edit note, select multiple numbers.
3. Rotate the device.

What is the expected output? What do you see instead?
The pop up should remain open with the numbers selected. Instead it is closed 
and the numbers are lost.

What version of the product are you using? On what operating system?
Open Sudoku version? 1.1.5
Phone model? Android emulator, with CPU Intel Atom (x86)
Android Version?  Android 4.3 API level 18
ROM?  512 MB of SD card

Please provide any additional information below.

Original issue reported on code.google.com by [email protected] on 8 Sep 2013 at 1:33