Revert "Merge pull request #6598 from guardian/fix-profile-pages"

This reverts commit 6efd28c671c36da792c7b760400493594e6009e0, reversing
changes made to e776d58b2de0c768fcdece63ecd2f1841e18f9db.

Conflicts:
	static/src/javascripts/projects/common/modules/discussion/user-avatars.js
Revert "Update common.js"

This reverts commit 9feca25d54405119738644b12cb095d4ba68512d.
Revert "Update common.js"

This reverts commit 3fad1c7d91101e8ab0411f94749b706529202523.
Merge pull request #6609 from guardian/revert-profile-changes

Revert "Merge pull request #6598 from guardian/fix-profile-pages"