IMPROVEMENTS

• Improved Nib preview compatibility with Mountain Lion.
• Improved language selection interface.
• Added support for new Apple Glot file extension "lg" (fixes #1507)
• Solved an issue where single strings files could not be imported (fixes #1510)
• Improved error printout when importing localizer files form invalid paths.
• Improved temporary path generation using random component.
• Fixed a couple of crahses.