* use remaining length when sending coins to vesting account
* query claims that have corresponding claim periods
* cleanup comments
* remove debugging statements
* fix bug with inserting period in middle of vesting schedule
* apply review suggestion
* add collateral type field to cdp and collateral param
* fix upstream tests
* fix simulations
* fix validation logic
* update incentive to use collateral type instead of denom
* use collateral type instead of denom in cdp
* remove unused code
* address review comments