Added 502 error code to redirect maintainence page.
Merge remote-tracking branch 'upstream/dev-branch' into dev-branch

* upstream/dev-branch:
  "Added id's ,alt and title"
  "Added id's,alt and title"
  "Added the id's,alt and title"
  "Added the id's,alt and title"
  "added id's,alt and title"
  "Added the id's, alt and title"
  "added id's, alt and title"
  "added id's, alt and title"
  "added id's, alt and title"
  "added the id's , alt and title"
  "Added the Id's, Alt and Title for the fields"
  "Added the Id's, Alt and Title for the fields"
  "Added the Id's, Alt and Title for the fields"
Merge pull request #723 from anilgooru/dev-branch

Added 502 error code to redirect maintainence page.