Bug 16053: Do not remove the active flag when editing the active currency

Bug 16053: Do not remove the active flag when editing the active currency

From commit b574b615919a6463708d4c1d7b1153a061c1ea0a
   Bug 15084: Make sure the previous active currency is marked as inactive

When a currency is stored, all the active flags of all currencies are unset.
Only the active ones and different than the one we are editing should be updated.

Test plan:
Edit the active currency
=> Without this patch the active flag was removed
=> With this patch, the active flag is kept

Edit another currency and set it the active flag
=> The active flag must have been removed from the previously active
currency.

Signed-off-by: Owen Leonard <oleonard@myacpl.org>
Signed-off-by: Katrin Fischer <katrin.fischer.83@web.de>
Signed-off-by: Brendan Gallagher brendan@bywatersolutions.com