Remove BOM
Convert UTF-8 encoding

Attempted to repair several mangled files as well. Also removed empty or redundant languages. There are issues with the 'german' and 'de_utf8' direcories, as there are substantial differences that still need to be resolved.
Conversion to UTF-8
Conversion to UTF-8
Correct occurances of Unicode replacement character

In addition, do a quick update of the readme.txt files that were affected.