Launching modpack on double-click, fixes #515.

Does require moving the launch method in LaunchFrame to public scope, so ModpacksPane can call it.

Signed-off-by: bolte-17 <bolte.17@gmail.com>
Added fullscreen support for OS X.

Signed-off-by: Birger J. Nordølum <birgerjn@gmail.com>
Changed Maven to generate the OS X app.

Also changed some directories.

Signed-off-by: Birger J. Nordølum <birgerjn@gmail.com>
Merge pull request #528 from MindTooth/osx_build_plugin

Changed Maven to generate the OS X app.
Merge pull request #529 from MindTooth/osx_fullscreen

Added fullscreen support for OS X.
Change formatting, add comments.
Merge pull request #517 from bolte-17/test

Launching modpack on double-click, fixes #515.