Currently rating globally allows 3 values for customers through email
requests: 5, 3 and 1. Through other means (frontend use of rating widget)
values from 5 to 1 are possible.
Only 5 is considered as a valid value for parent container satisfaction.
This leads to strange situation where a document with 4, 4, 4 and 5 has
only 25% of satisfaction.
This is considered as a bit harsh. In this commit we move the "satisfied"
limit of parent container as being above the "ok" value (aka, 4 and 5).
X-original-commit: c884a29b6b0f2cbc8b0aebbaed93d6f211621d1d
Thibault Delavallée
073278642d