[FIX]Fixed the issue of o2m sorting by column, m2o field does not give proper result for sorting because whole value of m2o [id, value] going to compare for sorting.
[MERGE] [FIX] one2many fields: when sortign on a column of type m2o (format (id, name)), instead of sorting on the tuple (and then id), sort on the name_get value to match what is shown on the screen