Is there somewhere a information abount missing translations?
I just added a script "checktrans.php" to the maintenance directory in the phase3 source tree. Running that script will check your live installation and report all untranslated messages.
You still trying to convince me to install my own wikipedia ;)
It doesn't actually have to run, you just have run the install script to move the files over. Something I haven't cleaned up yet is the fact that many of the include files have complex dependencies, so even the maintenance scripts have to do all the includes that the live software does, and that's easiest if it gets them from the actual install. I'll fix that over time, but it will take a while.