Punctuation errors in dialog

There is a comma splice in the English text in the confirmation dialog: "This operation cannot be undone, are you sure you want to delete this activity?" should be changed to "This operation cannot be undone. Are you sure you want to delete this activity?" Hopefully this change to the English text will encourage translators to correct any comma splices in the text of other languages. For example, the French translation also contains two independent clauses joined by a comma, whereas the Spanish and Catalan translations correctly have the clauses split into two sentences.

This English correction requires that the msgid be changed in the .po files. I don't know how the .po files are generated, but it looks like it requires more care than simply changing a msgstr, since the msgid is referenced in *all* .po files.

Thanks for the time.