Correct contact associations

So far our contract discovery was wrong.
https://spectrum.chat/aragon/aragonos/how-do-i-get-the-appid-namehash-of-an-app-in-open-aragonpm-eth~50dd2c67-63a2-49cf-bc64-aa033e33f48d

All dependent contract connections that are needed must be passed in and
can not be discovered from the DAO/Kernel/whatever.

So far I have no idea how we upgrade to these new contracts.

apps/reimbursement/contracts/Reimbursement.sol

@@ -28,9 +28,7 @@ contract Reimbursement is AragonApp {
   event ReimbursementAdded(uint32 id, address indexed addedByAccount, uint256 amount);
   event ReimbursementVetoed(uint32 id, address vetoedByAccount);
 
-  // TODO: remove _appIds when those are removed from the kreditskit
-  // using the appids to find other apps is wrong according to aragon
-  function initialize(bytes32[5] _appIds) public onlyInit {
+  function initialize() public onlyInit {
     blocksToWait = 40320; // 7 days; 15 seconds block time
     initialized();
   }