Ivan Barreto authored May 30, 2019 and Robert Lyon committed Aug 05, 2019

This change stops one having duplicate group category entries.
We will do the comparison in a case insensitive way so we avoid
having: CatA, caTa, catA, cAta etc.

behatnotneeded

Change-Id: I2daafe898f78e78b0aa0b0bf2ffac29ea1b814e4