first step at grouped transaction list
conto
grouping now working with handling of change of configuration
now displaying sums for groups
third and last safeguard against observer being called when activity has not been set up (probably after orientation change in ExpenseEdit activity)
grouping improved
corrections
fixes
hide sums with onclick on header, make sure data is refreshed at the right moment (when groupingcursor is loaded
apply sign in view, and have db return abs value, so that we have 0 expenses be marked with sign
alignment of sums
grouping migrated from pref to account setting
added missing closing '
display special titles for current and last day/week
remove unused
hidden sum lines reappear when header is sticky, hence do not provide the possibility for the moment
new files for grouping
cache column indexes
values returned by strftime need to be casted to integers
static variables seemed to lead to ANR