Add SANDSTORM=1 to the environment under Sandstorm
Add SANDSTORM=1 to the environment under Sandstorm

We add the SANDSTORM=1 environment variable to sandstorm-pkgdef.capnp so that
accounts-sandstorm will ensure that it's the only loaded accounts package when
running under Sandstorm.

Serubin/wekan,libreboard/libreboard,libreboard/libreboard,mario-orlicky/wekan,wekan/wekan,oliver4u/WEKAN_runpartner,johnleeming/wekan,wekan/wekan,jtickle/wekan,johnleeming/wekan,nztqa/wekan,ddanssaert/wekan,Serubin/wekan,oliver4u/sap-wekan,GhassenRjab/wekan,nztqa/wekan,mario-orlicky/wekan,johnleeming/wekan,wekan/wekan,Serubin/wekan,oliver4u/sap-wekan,mario-orlicky/wekan,GhassenRjab/wekan,jtickle/wekan,oliver4u/sap-wekan,oliver4u/WEKAN_runpartner,oliver4u/WEKAN_runpartner,ddanssaert/wekan,jtickle/wekan,GhassenRjab/wekan,wekan/wekan,wekan/wekan,johnleeming/wekan,ddanssaert/wekan,nztqa/wekan