[iso] ignore extra nameless files on some UDF images

* Closes pbatard#155

[loc] add [v]ersion command support

[loc] complete Italian translation

[loc] fix untranslated messages for "another application in use"

* Issue reported by georg1136

[loc] fix resizing in height

* Also clarify some translations

[loc] add Hungarian translation

[iso] sanitize invalid FAT & NFTS filenames

* Also fix support for labels containing double quotes
* Closes pbatard#135
* Closes pbatard#193

[loc] add language selection menu

[loc] add a menu.c32 test ISO image

[loc] add an option to force update

* This is meant to be used by translators for testing the UI
* Also fix the positioning and centering of boilerplate on the new version dialog
* French translation improvements