Duplicate expansions returned as responses to lookup queries

[evolve75]

acrobot returns duplicate expansions. This is probably due to the same expansion being added for the root acronym.

Is it possible to check for duplicate explanations while adding?

[evolve75]

This actually seems to be a case-sensitivity issue in the expansion. Example: "OpenShift" vs. "Openshift".

[m-czernek]

Acronym lookup is case insensitive, acronym values were case sensitive by design.
I can add a case-sensitive check for adding.

The problem, however, is that if the first user saves OCP = openshift, another user one gets an error when they try to save OCP = OpenShift (which is correct). I'm not sure how we'd solve that.