Tweaked gitignore

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

conf/site/node_modules/array-flatten/array-flatten.d.ts

@@ -0,0 +1,16 @@
+declare function flatten <T> (array: flatten.NestedArray<T>): T[];
+
+declare namespace flatten {
+  export interface NestedArray <T> extends ReadonlyArray<T | NestedArray<T>> {}
+
+  export interface NestedList <T> {
+    [index: number]: T | NestedList<T>;
+    length: number;
+  }
+
+  export function from <T> (array: NestedList<T>): T[];
+  export function depth <T> (array: NestedArray<T>, depth: number): NestedArray<T>;
+  export function depthFrom <T> (array: NestedList<T>, depth: number): NestedArray<T>;
+}
+
+export = flatten;