Revert "Grid question shall be called a Picture question (Pic)"

The commit is reverted temporarily to exclude the change from 2.0
release.

This reverts commit ada66d008cab85764da5a18bd73b367ea70f3728.
Start next release cycle
Revert "Revert "Grid question shall be called a Picture question (Pic)""

This reverts commit ecfcf8936dc99614ce268035b12af90fc48cc87a.
Wording changes