Revert "Merge pull request #2400 from guardian/commit-node_modules"

This reverts commit 745482432981d2a2797a2619afee1c7b151f6960, reversing
changes made to 680b381f22604ad416e6ef101f6231098e67f9ba.
Revert "Merge pull request #2399 from guardian/commit-node_modules"

This reverts commit e452ca26ef2d8acd4796ecc622127d0c0b74fbd0, reversing
changes made to 99fece66dc529693c33f7939326abdcac2bb2989.
Revert "only npm install phantomjs, as need to bin"

This reverts commit 99fece66dc529693c33f7939326abdcac2bb2989.
Revert "correct link to phantomjs"

This reverts commit 50a76109102377d6d68e009bd8862c39671a1afa.
Revert "Merge pull request #2312 from guardian/commit-node_modules"

This reverts commit c771a46af1df9802afd337954c98e1d44c75ddd1, reversing
changes made to 18975d626d9e8c9ae920185acc159da2d7e4a703.
Merge pull request #2401 from guardian/revert-node_modules-commit

Revert node modules commit
Merge remote-tracking branch 'origin/master' into identity-facebook-autosignin-mobile-ab