Added a confirmation dialog
The back button in confirmation dialog now behaves correctly
First version of the dialog with a "Do not ask again" checkbox
Added interfacing code for the "Do not ask again" checkbox
Added code for saving the "do not ask again". Untested
Fist step in dynamic linking of spinner menu selections and static final IDs: the string names of menu items are referenced numerically
Finished mapping of IDs to commands. Untested
Initial version of the preferences dialog
Disabled screen orientation change
Displaying fractional digits correctly
More or less centring the label text
Added graph view border
New icons
Made the spinner drop down look better
Got the spinners to look like buttons (3 hours. Whee!)