mrp_repair: missing invalidation on fees
added unit test for lp:1281687
[MERGE] [FIX] mrp_repair: add missing invalidation functions for stored field amount_total, courtesy of Alexandre Fayolle (camptocamp)
[FIX] also track modifications on fee_lines field
[MERGE] [FIX] mrp_repair: add missing invalidation functions for stored field amount_total, courtesy of Alexandre Fayolle (camptocamp)
[MERGE] [FIX] mrp_repair: add missing invalidation functions for stored field a\
mount_total, courtesy of Alexandre Fayolle (camptocamp). Resolved conflict with\
 OCB fix in revision 9947.