Support tiers

Closes #1461 (closed)

New Cassandra table

CREATE TABLE minds.wire_support_tiers (
    entity_guid bigint,
    currency text,
    guid bigint,
    amount decimal,
    name text,
    description text,
    PRIMARY KEY (entity_guid, currency, guid)
);

Elasticsearch schema changes

New minds_badger field on all types:

"wire_support_tier": {
  "type": "text",
  "fields": {
    "keyword": {
      "type": "keyword",
      "ignore_above": 256
    }
  }
}