Rename WhitelisterRole to WhitelistAdminRole. (#1589)

* Rename WhitelisterRole to WhitelistAdminRole.

* Update WhitelistAdmin changelog entry.

contracts/access/roles/WhitelistAdminRole.sol

@@ -0,0 +1,47 @@
+pragma solidity ^0.5.0;
+
+import "../Roles.sol";
+
+/**
+ * @title WhitelistAdminRole
+ * @dev WhitelistAdmins are responsible for assigning and removing Whitelisted accounts.
+ */
+contract WhitelistAdminRole {
+    using Roles for Roles.Role;
+
+    event WhitelistAdminAdded(address indexed account);
+    event WhitelistAdminRemoved(address indexed account);
+
+    Roles.Role private _whitelistAdmins;
+
+    constructor () internal {
+        _addWhitelistAdmin(msg.sender);
+    }
+
+    modifier onlyWhitelistAdmin() {
+        require(isWhitelistAdmin(msg.sender));
+        _;
+    }
+
+    function isWhitelistAdmin(address account) public view returns (bool) {
+        return _whitelistAdmins.has(account);
+    }
+
+    function addWhitelistAdmin(address account) public onlyWhitelistAdmin {
+        _addWhitelistAdmin(account);
+    }
+
+    function renounceWhitelistAdmin() public {
+        _removeWhitelistAdmin(msg.sender);
+    }
+
+    function _addWhitelistAdmin(address account) internal {
+        _whitelistAdmins.add(account);
+        emit WhitelistAdminAdded(account);
+    }
+
+    function _removeWhitelistAdmin(address account) internal {
+        _whitelistAdmins.remove(account);
+        emit WhitelistAdminRemoved(account);
+    }
+}

contracts/access/roles/WhitelistedRole.sol

@@ -1,15 +1,15 @@
 pragma solidity ^0.5.0;
 
 import "../Roles.sol";
-import "./WhitelisterRole.sol";
+import "./WhitelistAdminRole.sol";
 
 /**
  * @title WhitelistedRole
- * @dev Whitelisted accounts have been approved by a Whitelister to perform certain actions (e.g. participate in a
- * crowdsale). This role is special in that the only accounts that can add it are Whitelisters (who can also remove it),
- * and not Whitelisteds themselves.
+ * @dev Whitelisted accounts have been approved by a WhitelistAdmin to perform certain actions (e.g. participate in a
+ * crowdsale). This role is special in that the only accounts that can add it are WhitelistAdmins (who can also remove
+ * it), and not Whitelisteds themselves.
  */
-contract WhitelistedRole is WhitelisterRole {
+contract WhitelistedRole is WhitelistAdminRole {
     using Roles for Roles.Role;
 
     event WhitelistedAdded(address indexed account);
@@ -26,11 +26,11 @@ contract WhitelistedRole is WhitelisterRole {
         return _whitelisteds.has(account);
     }
 
-    function addWhitelisted(address account) public onlyWhitelister {
+    function addWhitelisted(address account) public onlyWhitelistAdmin {
         _addWhitelisted(account);
     }
 
-    function removeWhitelisted(address account) public onlyWhitelister {
+    function removeWhitelisted(address account) public onlyWhitelistAdmin {
         _removeWhitelisted(account);
     }
 

contracts/access/roles/WhitelisterRole.sol

@@ -1,47 +0,0 @@
-pragma solidity ^0.5.0;
-
-import "../Roles.sol";
-
-/**
- * @title WhitelisterRole
- * @dev Whitelisters are responsible for assigning and removing Whitelisted accounts.
- */
-contract WhitelisterRole {
-    using Roles for Roles.Role;
-
-    event WhitelisterAdded(address indexed account);
-    event WhitelisterRemoved(address indexed account);
-
-    Roles.Role private _whitelisters;
-
-    constructor () internal {
-        _addWhitelister(msg.sender);
-    }
-
-    modifier onlyWhitelister() {
-        require(isWhitelister(msg.sender));
-        _;
-    }
-
-    function isWhitelister(address account) public view returns (bool) {
-        return _whitelisters.has(account);
-    }
-
-    function addWhitelister(address account) public onlyWhitelister {
-        _addWhitelister(account);
-    }
-
-    function renounceWhitelister() public {
-        _removeWhitelister(msg.sender);
-    }
-
-    function _addWhitelister(address account) internal {
-        _whitelisters.add(account);
-        emit WhitelisterAdded(account);
-    }
-
-    function _removeWhitelister(address account) internal {
-        _whitelisters.remove(account);
-        emit WhitelisterRemoved(account);
-    }
-}

contracts/mocks/WhitelistAdminRoleMock.sol

@@ -0,0 +1,17 @@
+pragma solidity ^0.5.0;
+
+import "../access/roles/WhitelistAdminRole.sol";
+
+contract WhitelistAdminRoleMock is WhitelistAdminRole {
+    function removeWhitelistAdmin(address account) public {
+        _removeWhitelistAdmin(account);
+    }
+
+    function onlyWhitelistAdminMock() public view onlyWhitelistAdmin {
+    }
+
+    // Causes a compilation error if super._removeWhitelistAdmin is not internal
+    function _removeWhitelistAdmin(address account) internal {
+        super._removeWhitelistAdmin(account);
+    }
+}

contracts/mocks/WhitelisterRoleMock.sol

@@ -1,17 +0,0 @@
-pragma solidity ^0.5.0;
-
-import "../access/roles/WhitelisterRole.sol";
-
-contract WhitelisterRoleMock is WhitelisterRole {
-    function removeWhitelister(address account) public {
-        _removeWhitelister(account);
-    }
-
-    function onlyWhitelisterMock() public view onlyWhitelister {
-    }
-
-    // Causes a compilation error if super._removeWhitelister is not internal
-    function _removeWhitelister(address account) internal {
-        super._removeWhitelister(account);
-    }
-}