Our spk currently have an issue with the bundled MongoDB (forked)
version that breaks if some files are inserted in a GridFS collection.
We need to find out a way to upgrade and migrate the bundled database
until we can re-enable the attachment feature.
Note that the feature is unmodified, it's just hidden in the UI.
It seems that the total size of the sandstorm package manifest can't
exceed a certain size. Putting a small image works until I figure out
what the issue is.
We still miss some branding stuff, such as screenshots, icons, and a
description.
This commit also hides an option related to user permissions managment
in the sandstorm package.
Both sandstorm and LibreBoard have significantly evolved since the
last release of LibreBoard on sandstorm. This commit:
* adds some more attributes on the sandstorm manifest
* introduces support with the sandstorm sharing box
* uses a server redirection to point to the board document
* hides the top shortcut bar on sandstorm
Fixes#163.
