chaging gallery image max-height to 90% of viewport
amending vh relative gallery images for safari
use js- class
Merge branch 'master' of github.com:guardian/frontend into gallery-image-height

* 'master' of github.com:guardian/frontend:
  Update dev-build routes for admin
js only solution for responsive height gallery images
Merge branch 'master' of github.com:guardian/frontend into gallery-image-height

* 'master' of github.com:guardian/frontend: (23 commits)
  fix gallery tests
  make label width 320px
  more obvious what 300px means
  fix indentatino
  rogue newline
  Fix .editorconfig Link
  style more specific selectors
  consolidate label css
  update test to use breadcrumb class that was added back
  restore breadcrumbs css, to lowercase the items
  consistent labelling of inline ads
  Url decoding now understands not to mess with combiner pages.
  update test to reflect new poisition of elements
  style label on < tablet
  update dev-build
  Prevent Facia Press from pressing an empty front
  remove breadcrumb css
  use signposting styling for breadcrumb
  move breadcrumbs to right place in the footer
  correct spacing between gallery items
  ...

Conflicts:
	applications/app/views/fragments/galleryBody.scala.html
Merge pull request #5755 from guardian/gallery-image-height

chaging gallery image max-height to 90% of viewport