WIP Generic data handling and caching

Add basic support for reimbursements via new, generic data handling
functions.

app/utils/process-reimbursement-data.js

@@ -0,0 +1,20 @@
+export default function processReimbursementData(data) {
+  const processed = {}
+
+  if (data.confirmedAtBlock && (typeof data.confirmedAtBlock.toNumber === 'function')) {
+    processed.confirmedAt = data.confirmedAtBlock.toNumber();
+  } else if (data.confirmedAt !== 'undefined') {
+    processed.confirmedAt = data.confirmedAt;
+  }
+
+  const otherProperties = [
+    'id', 'contributorId', 'token', 'amount', 'vetoed', 'ipfsHash',
+    'expenses', 'pendingTx'
+  ];
+
+  otherProperties.forEach(prop => {
+    processed[prop] = data[prop];
+  });
+
+  return processed;
+}