Translations - Additional Languages

Checking language packs I found some non conformity:

File german/email_lang.php:
Added line: email_no_from to translate.

File khmer/email_lang.php:
Added line: email_no_from to translate.

File khmer/form_validation_lang.php:
Added line: form_validation_error_message_not_set and form_validation_in_list to translate.

File khmer/ftp_lang.php:
Rename line: ftp_unable_to_makdir to ftp_unable_to_mkdir.

File khmer/imglib_lang.php:
Remove line: imglib_writing_failed_gif.

Download: http://1drv.ms/1aZoCTi

Thank you for pointing these out!
The proper way to propose changes is through a pull request to the repo, and if just to point out the missing lines, by raising an issue on the repo. I will do that later today if you don't get a chance to