Refactor colonyFundsClaimed query

[willm30]

Using the list version of ColonyFundsClaimed query could be improved here. This will list all ColonyFundsClaims in the db, and only apply filtering for colony and token once the query returns. If we have more than 100 items in the db (the default limit), we may not receive the results we're expecting.

We should be able to query the colony directly and get claims from there, since they're connected in the schema.