Comment 0 for bug 523794

While translating Ground Control I have discovered a couple or unrelated comments appering in the PO template, while for some messages the comments were missing:

Missleading comments:
https://translations.edge.launchpad.net/groundcontrol/trunk/+pots/groundcontrol/ro/4/+translate
https://translations.edge.launchpad.net/groundcontrol/trunk/+pots/groundcontrol/ro/30/+translate

When the translation includes a couple of %s, it would be nice to hint translators about their usage and how the final translation will look like.
Missing comments:
https://translations.edge.launchpad.net/groundcontrol/trunk/+pots/groundcontrol/ro/129/+translate
https://translations.edge.launchpad.net/groundcontrol/trunk/+pots/groundcontrol/ro/130/+translate
https://translations.edge.launchpad.net/groundcontrol/trunk/+pots/groundcontrol/ro/137/+translate