Merge branch 'move-timeago-to-vendor-dir' into 'master'

move timeago.js to vendor directory

## What does this MR do?

moves timeago.js into `/vendor/assets/javascripts` for consistency with other external javascript libraries.

## Are there points in the code the reviewer needs to double check?

make sure timeago still works as it should...?  I don't see how this could have broken anything.

## Why was this MR needed?

consistency with our guidelines

## Does this MR meet the acceptance criteria?

- Tests
  - [x] All builds are passing
- [x] Conform by the [merge request performance guides](http://docs.gitlab.com/ce/development/merge_request_performance_guidelines.html)
- [x] Conform by the [style guides](https://gitlab.com/gitlab-org/gitlab-ce/blob/master/CONTRIBUTING.md#style-guides)
- [x] Branch has no merge conflicts with `master` (if it does - rebase it please)
- [x] [Squashed related commits together](https://git-scm.com/book/en/Git-Tools-Rewriting-History#Squashing-Commits)

## What are the relevant issue numbers?

See discussion in [!6274](https://gitlab.com/gitlab-org/gitlab-ce/merge_requests/6274#note_18625583)

See merge request !7590

app/assets/javascripts/environments/components/environment_item.js.es6

-/*= require lib/utils/timeago */
+/* global Vue */
+/* global timeago */
+
+/*= require timeago */
 /*= require lib/utils/text_utility */
 /*= require vue_common_component/commit */
 /*= require ./environment_actions */
@@ -6,9 +9,6 @@
 /*= require ./environment_stop */
 /*= require ./environment_rollback */
 
-/* global Vue */
-/* global timeago */
-
 (() => {
   /**
    * Envrionment Item Component

app/assets/javascripts/lib/utils/datetime_utility.js

-/* eslint-disable func-names, space-before-function-paren, wrap-iife, no-var, no-param-reassign, no-cond-assign, no-undef, comma-dangle, no-unused-expressions, prefer-template, padded-blocks, max-len */
+/* eslint-disable func-names, space-before-function-paren, wrap-iife, no-var, no-param-reassign, no-cond-assign, comma-dangle, no-unused-expressions, prefer-template, padded-blocks, max-len */
+/* global timeago */
+/* global dateFormat */
+
+/*= require timeago */
+/*= require date.format */
+
 (function() {
   (function(w) {
     var base;

spec/javascripts/build_spec.js.es6

@@ -2,7 +2,6 @@
 /* global Build */
 /* global Turbolinks */
 
-//= require lib/utils/timeago
 //= require lib/utils/datetime_utility
 //= require build
 //= require breakpoints

spec/javascripts/merge_request_widget_spec.js

 /* eslint-disable space-before-function-paren, quotes, comma-dangle, dot-notation, indent, quote-props, no-var, padded-blocks, max-len */
+
 /*= require merge_request_widget */
-/*= require lib/utils/timeago */
 /*= require lib/utils/datetime_utility */
 
 (function() {

app/assets/javascripts/lib/utils/timeago.js → vendor/assets/javascripts/timeago.js

-/* eslint-disable no-unused-expressions, wrap-iife, func-names, curly, no-param-reassign, no-trailing-spaces, prefer-arrow-callback, no-var, one-var, quote-props, space-before-function-paren, vars-on-top, radix, prefer-template, space-infix-ops, no-use-before-define, newline-per-chained-call, no-useless-escape, no-nested-ternary, indent, no-undef, no-plusplus, one-var-declaration-per-line, operator-assignment, consistent-return, keyword-spacing, max-len, space-unary-ops, no-shadow, no-restricted-syntax, guard-for-in, eol-last, max-len */
-
 /**
  * Copyright (c) 2016 hustcc
  * License: MIT