Recognize merchant authority in Fund initiatives

Summary: Update fund for new merchant authority stuff.

Test Plan:
  - Created a secret initiative.
  - Could see related activity as merchant.
  - Could not see it not-as-merchant.

Reviewers: btrahan

Reviewed By: btrahan

Subscribers: epriestley

Differential Revision: https://secure.phabricator.com/D11959

src/applications/fund/storage/FundInitiative.php

@@ -125,7 +125,21 @@ final class FundInitiative extends FundDAO
   }
 
   public function hasAutomaticCapability($capability, PhabricatorUser $viewer) {
-    return ($viewer->getPHID() == $this->getOwnerPHID());
+    if ($viewer->getPHID() == $this->getOwnerPHID()) {
+      return true;
+    }
+
+    if ($capability == PhabricatorPolicyCapability::CAN_VIEW) {
+      foreach ($viewer->getAuthorities() as $authority) {
+        if ($authority instanceof PhortuneMerchant) {
+          if ($authority->getPHID() == $this->getMerchantPHID()) {
+            return true;
+          }
+        }
+      }
+    }
+
+    return false;
   }
 
   public function describeAutomaticCapability($capability) {