Bug 21054: Remove extraneous </body> tag from sco-main.tt

Bug 21054: Remove extraneous </body> tag from sco-main.tt

To test:
1 - Enable sco and setup AutoSelfCheck
2 - Try to use self checkout and print receipt
3 - You shoudl be redirected to the login page
4 - Apply patch and restart all the things
5 - Try to use self checkout and print a receipt
6 - Success!

Signed-off-by: Martin Renvoize <martin.renvoize@ptfs-europe.com>
Signed-off-by: Nick Clemens <nick@bywatersolutions.com>
Signed-off-by: Martin Renvoize <martin.renvoize@ptfs-europe.com>
(cherry picked from commit d9a94cc7e5fbcf924a1368423179c7d05fa49c8b)
Signed-off-by: Fridolin Somers <fridolin.somers@biblibre.com>