Movie namespace

[jburel]

Currently we have 3 name spaces for movie, One for each format supported.
We should only use one name space

 const string NSMOVIE = "openmicroscopy.org/omero/movie";

TODO:

• update make movie script
• update File annotation
• replace the name space for already inserted file annotation. Follow the list of name space to be modified:

    const String MOVIE_MPEG_NS = 
      	"openmicroscopy.org/omero/movie/mpeg";
  
    const String MOVIE_QUICK_TIME_NS = 
      	"openmicroscopy.org/omero/movie/qt";
  
    const String MOVIE_WINDOWS_MEDIA_NS = 
      	"openmicroscopy.org/omero/movie/wmv";