is4c_transaction_details view now ensures that date is not nil string
add /passwordchange/ to settings.USER_PASSES_TEST_URLS, fixes #444.
Note that administrators have "send password reset email" using /passwordreset/
while regular users have "change your password" using /passwordchange/
Updated transaction summary report

Changes:
 - Added Unique Transactions by Account Type
 - Added Unique Member Transactions
 - Added Account Type filter
 - Cleaned up the form so that it is not so ugly when no filter
   information has been submitted
Merge branch 'master' of github.com:mariposacoop/mess
Renamed "Staff" account type "Store"
Merge branch 'master' into new_workshift_policies

Conflicts:
	mess/membership/models.py