wip
Make membership tab hidden
Revert back some old skool isProfilePage logic
Update template
Merge branch 'master' of github.com:guardian/frontend into membership-tab-url

* 'master' of github.com:guardian/frontend: (174 commits)
  move js-context to html
  fix indentation
  css adjustments
  bump casper js version
  Abs paths for collections
  Section pages now pageskinnable.
  Renamed variable for clarity
  Simple renames for great clarity.
  Content pages now recognise sponsored Series tags
  List of Sponsored Series tags saved to the cloud.
  Use classic static.guim.co.uk as original image for articles where possible.
  Rolling back localisation of fixtures.
  replace desktop nav with new nav if NewNavSwitch is on
  remify boxing attributes
  correct pageskin tempalte call
  remove FeaturesAutoContainerSwitch by keeping the 'On' variant
  only send pecific ad unit keywords if necessary
  Content pages now recognise sponsored Series tags
  rename NewMobileNavSwitch switch to NewNavSwitch
  add DOM struncture for the new nav
  ...
fix url for sprite sheet
tab urls now enhaced via JS to provide non-js default link functionality
more descriptive link names
Merge pull request #4684 from guardian/membership-tab-url

Give Membership tab a url