Update hu_HU.php

+ Translated to Hungarian:
 - lang_Actions  
 - lang_Swipe_help
 - lang_Upload_base_help
 - lang_Operations
 - lang_Sorting
 - lang_Show_url
 - lang_Extract
 - lang_File_info
 - lang_Edit_image
 - lang_Duplicate

- Changed 'lang_Name' to 'lang_Filename' as it was causing php var not defined at sorting.
Merge pull request #53 from Mikeyhun/patch-1

Update hu_HU.php