Every uuid is now located in a clip. To select a media, use its base
clip's uuid.

... as it does nothing more than MediaCellView

Ho and please, don't clone an objet to get over its constness.

We don't need this anymore as Clip aren't stored in the Library.

The previewwidget isn't meant to emit a signal about a clip beeing
added.
Let this to the media, as it holds the clips.

This was just some kind of wrapper to the Media::addClip method

Signed-off-by: Hugo Beauzee-Luyssen <beauze.h@gmail.com>

Updating config.h.cmake to have the version available through a define

Old language is now restored when vlmc is launched again.

Signed-off-by: Hugo Beauzee-Luyssen <beauze.h@gmail.com>

Menu shortcut weren't updated