Disputes: allow ruling options to be customizable per arbitrable instance

[sohkai]

The Court allows the IArbitrable to define as many rulings as they'd like, and assign whatever meaning they'd like to each number.

At the moment, we hardcode 3 to be "reject" ("block action") and 4 to be "allow" ("allow action"), but this can change based on the IArbitrable creating the dispute.

For example, with the original Agreement, we were expecting 3 to be "allow" ("in favour of submitter") and 4 to be "block" ("in favour of challenger").

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It would be ideal for us to dynamically associate a different dispute frontend / set of ruling options based on the type or instance of IArbitrable used.