Resolve "Remove the IIFE's from each javascript file"

What does this MR do?

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

Why was this MR needed?

Screenshots (if relevant)

Does this MR meet the acceptance criteria?

• Changelog entry added
• Documentation created/updated
• API support added
• Tests
  • Added for this feature/bug
  • All builds are passing
• Conform by the merge request performance guides
• Conform by the style guides
• Branch has no merge conflicts with master (if it does - rebase it please)
• Squashed related commits together

What are the relevant issue numbers?

Closes #29219 (moved)

mentioned in issue #27486 (moved)

added 49 commits

• 63adda4c...130fd255 - 36 commits from branch master
• 05bf229e - Remove IIFEs in shortcuts.js
• 41f62a5e - Remove IIFEs in admin.js
• dac678fa - Remove IIFEs in api.js
• 50b4fea0 - Remove IIFEs in aside.js
• 4a664cec - Remove IIFEs from autosave.js
• cf5a2f57 - Remove IIFEs from breakpoints.js
• d6bb969d - Remove IIFEs from broadcast_message.js
• f540833e - Remove IIFEs from build.js
• a8db1d91 - Remove IIFEs from build_artifacts.js
• d0fb82bf - Remove IIFEs from commit.js
• 98e86c03 - Remove IIFEs from commits.js
• 4301685f - Remove IIFEs from compare.js
• 0cb1f1c8 - Remove last IIFE from commits.js

Compare with previous version

mentioned in merge request !9884 (merged)

Closing in favor of https://gitlab.com/gitlab-org/gitlab-ce/merge_requests/9884

closed

mentioned in issue gitlab#8073