Code review comment for lp://qastaging/~larsu/evolution-indicator/messaging-menu-fixes

Seems to me like this would be a perpetuating a regression that we have since evo switched to a source registry: accounts won't be updated when added/removed or changed.

Consider adding the necesary code to watch the source registry signals described at https://developer.gnome.org/libedataserver/stable/ESourceRegistry.html#ESourceRegistry.signals in place of your TODO at line 688.

Otherwise, looks good :) Since the code itself looks fine and we already have the above regression, I'm approving the merge.