Allow searching for things without case sensitivity

[tburtchell]

We're adding more capabilities to the Ziti Admin Console around searching for things, such as Identities, Routers, Policies by name.

I would like to be able to search for partial names in a case insensitive way. For example, assume three identities with names:

1. TestIdentity
2. testIdentity
3. This Identity Is a Test

I would like to be able to search for "test" or "TEST" and have all three of these come back.

Internal discussions ended up with a suggestion of icontains and ~= to accomplish this.