Add an active property to the scripting definition for Account.

Mac/Resources/NetNewsWire.sdef

@@ -84,7 +84,10 @@
             <property name="type" code="ATyp" type="account type" access="r" description="The type of the account">
                 <cocoa key="accountType"/>
             </property>
-            <property name="contents" code="Cnts" access="r" description="The type of the account">
+			<property name="active" code="Actv" type="boolean" access="rw" description="Whether or not the account is active">
+				<cocoa key="scriptingIsActive"/>
+			</property>
+           <property name="contents" code="Cnts" access="r" description="The type of the account">
                 <cocoa key="contents"/>
                 <type type="account item" list="yes"/>
             </property>

Mac/Scriptability/Account+Scriptability.swift

@@ -25,7 +25,17 @@ class ScriptableAccount: NSObject, UniqueIdScriptingObject, ScriptingObjectConta
         let scriptObjectSpecifier = myContainer.makeFormUniqueIDScriptObjectSpecifier(forObject:self)
         return (scriptObjectSpecifier)
     }
-    
+
+	@objc(scriptingIsActive)
+	var scriptingIsActive: Bool {
+		get {
+			return account.isActive
+		}
+		set {
+			account.isActive = newValue
+		}
+	}
+	
     // MARK: --- ScriptingObject protocol ---
     
     var scriptingKey: String {