Added database driver check for Postgresql in text search

[ARL-Steve]

Add a database driver check to change the 'like' operator to 'ilike'. This enables Postgresql searches to be case-insensitive by default the same as Mysql.

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• Have you followed the guidelines in our Contributing document?
• Have you checked to ensure there aren't other open Pull Requests for the same update/change?

New Feature Submissions:

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Changes to Core Features:

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• Have you written new tests for your core changes, as applicable?
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[Muetze42]

Thank you. I was just about to correct that too.

[stale]

This issue has been automatically marked as stale because it has not had recent activity. It will be closed if no further activity occurs. Thank you for your contributions.