Record number display is auto-updating now.
Improve number formatting.
Progress bar is working in main activity.
Open up the layout a bit.
Use a style for labels.

Clear the grey background for list items, in case they're reused.
Finished roughing in (untested) filtering support in DataCollection.
Eliminate the .util package and the generic list stuff - the filtering
has to happen in DataCollection itself, or else it doesn't survive an
orientation change.  This commit loses filtered-entry highlighting (to
be restored), but filters are now persistent.
Restore highlighting for a locked entry.
Alternating background for entries (hard-coded for now).
Fixed array index problem.
Fixed opening intent.
Added new icons.
Switch to resources for the bookmark activity, and fix toast.
Eliminated hard-coded strings from MainActivity and some other classes.
Sloop is more localisable now.
Removed more warnings about unparameterized strings.
Fix filtering so that null fields fail.
Added French localisation.
Removed obsolete filter activity and associated string resource.
Added Spanish localisation.
Added German localisation.