Hard code freeze break for GNOME Photos

[Aruna S <safincrazy gmail com>]

Hi, we would like to integrate the help for GNOME Photos in this release.
The patch for the pages till now can be found on this bug:
https://bugzilla.gnome.org/show_bug.cgi?id=711505 and the help is
mostly ready to be integrated.

The integration would also involve building the help and creating a
button in the application UI for the help(Hence the freeze break
request).

This should be complete by tomorrow.

Thanks!