Steve Howell bc20692a91 Prevent tracebacks when admin screens aren't loaded. ...

Various server events can be passed into admin.js before
the initial widgets have been set up.  This code short
circuits live update code when these events happen.

Note that live updates don't consistently work for the
admin pages before this fix (and after it), since don't
store data changes when the widgets aren't built.

2017-01-31 10:34:06 -08:00

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