Store kredits tokens as wei with 18 decimals

This stores the tokens with 18 decimals as most other tokens and as
assumed by a potential future token standard EIP 777.

apps/token/contracts/Token.sol

@@ -14,11 +14,15 @@ contract Token is ERC20Token, AragonApp {
 
   function initialize(bytes32[4] _appIds) public onlyInit {
     appIds = _appIds;
+    name = 'Kredits';
+    symbol = 'K';
+    decimals = 18;
     initialized();
   }
 
   function mintFor(address contributorAccount, uint256 amount, uint32 contributionId) public isInitialized auth(MINT_TOKEN_ROLE) {
-    _mint(contributorAccount, amount);
+    uint256 amountInWei = amount.mul(1 ether);
+    _mint(contributorAccount, amountInWei);
     emit LogMint(contributorAccount, amount, contributionId);
   }