Tweaked gitignore

gitignore removed all composer and npm files, so automated builds would fail

conf/site/node_modules/@babel/runtime/helpers/classPrivateFieldDestructureSet.js

@@ -0,0 +1,28 @@
+function _classPrivateFieldDestructureSet(receiver, privateMap) {
+  if (!privateMap.has(receiver)) {
+    throw new TypeError("attempted to set private field on non-instance");
+  }
+
+  var descriptor = privateMap.get(receiver);
+
+  if (descriptor.set) {
+    if (!("__destrObj" in descriptor)) {
+      descriptor.__destrObj = {
+        set value(v) {
+          descriptor.set.call(receiver, v);
+        }
+
+      };
+    }
+
+    return descriptor.__destrObj;
+  } else {
+    if (!descriptor.writable) {
+      throw new TypeError("attempted to set read only private field");
+    }
+
+    return descriptor;
+  }
+}
+
+module.exports = _classPrivateFieldDestructureSet;