Added Language updater script
Added Language updater script

Once for private use, now no more!

This script checks all the mod language files and updates
the mappings to the ones specified in the en_US.lang file.

Every deleted entry is also deleted on the other files, while comments
and blank lines are preserved. New translations are added and suffixed with
a ## NEEDS TRANSLATION ## entry, so that the language file updating can be
performed with a simple search.

This script has been tested and works as expected. Only problem is
the addition of the ## NEEDS TRANSLATION ## keyword at the end of the line
makes it appear in-game. I thought that this is not a huge problem, since
all translations should be updated before a release, but if this is
considered annoying, a simple update of the script (one character) will fix
this.

Warning! This script doesn't check the mod sources, so any
non-translated entry which is not present in en_US.lang (aka it shows with
its internal name in-game) will be ignored.

Signed-off by TheSilkMiner

OpenMods/OpenMods-IGW