Updated Galician translations
[l10n] Updated Italian translation.
Assamese translation updated for gnome 3.8
Updated French translation
perl: identify *.t files as perl test files
Updated Uyghur translation

Signed-off-by: Gheyret Kenji <gheyret@gmail.com>
Updated Czech translation
Updated Slovenian translation
Updated Portuguese translation and converted to New Spelling (Novo AO)
Updated Hungarian translation
Show mnemonics in the main completion window

Before, the mnemonic for the Details button was always hidden, even if
we pressed Alt, because the completion window doesn't have the focus.

It would be possible to show the mnemonic only at appropriate times, but
it would be too difficult for such a small detail (I know, Every Details
Matters, but simple code matters too :).

So it's better to always have the mnemonic visible, than never.