Bug 18504 - Amount owed on fines tab should be formatted as price if <10 or credit

Bug 18504 - Amount owed on fines tab should be formatted as price if <10 or credit

To test:
1 - Give a patron a fine of 1
2 - View opac fines tab, it shows as '1'
3 - Give patron a credit of '1'
4 - View opac fines tab, it shows as '1'
5 - Apply patch
6 - Both now show as '1.00'

Signed-off-by: Lisa Gugliotti <lisa@hchlibrary.org>
Signed-off-by: Julian Maurice <julian.maurice@biblibre.com>
Signed-off-by: Kyle M Hall <kyle@bywatersolutions.com>
(cherry picked from commit 6da7ed1d8c17960e1e90b8f197fe948d4ed25bad)
Signed-off-by: Katrin Fischer <katrin.fischer.83@web.de>