Update Basque translation
Bump version number to 3.0.4
Fix crash when the video height or width is zero

Closes #1555. Closes #1644.
Disable the wxGTK accelerator workaround for wx 2.9.5

Unsurprisingly the munging around with the menu bar implementation
details has resulted in things breaking, but fortunately the problem it
was working around (#1314) appears to have been fixed entirely.

Closes #1628.
wxStandardPaths is protected as of wxgtk 2.9.5