Generic mime types: add video mime types that are supported by Jukebox
Generic mime types: add video mime types that are supported by Jukebox

Extending the generic list will make those mime-types available in the
filter list (ObjectChooser, Journal). We have been extending the generic
list similarly before [1][2].

For the longer term fix see [3] to add support for custom mime types in
the ObjectChooser.

[1] http://bugs.sugarlabs.org/ticket/1319
[2] http://bugs.sugarlabs.org/ticket/1340
[3] http://bugs.sugarlabs.org/ticket/834

Signed-off-by: Manuel Kaufmann <54d769c38f2aa6d2679b577ce2986fc3d1abeaba@gmail.com>
Acked-by: Simon Schampijer <088e16a1019277b15d58faf0541e11910eb756f6@laptop.org>

i5o/sugar-toolkit-gtk3,quozl/sugar-toolkit-gtk3,gusDuarte/sugar-toolkit-gtk3,Daksh/sugar-toolkit-gtk3,tchx84/sugar-toolkit-gtk3,sugarlabs/sugar-toolkit-gtk3,godiard/sugar-toolkit-gtk3,samdroid-apps/sugar-toolkit-gtk3,quozl/sugar-toolkit-gtk3,i5o/sugar-toolkit-gtk3,ceibal-tatu/sugar-toolkit-gtk3,Daksh/sugar-toolkit-gtk3,puneetgkaur/backup_sugar_sugartoolkit,tchx84/debian-pkg-sugar-toolkit-gtk3,manuq/sugar-toolkit-gtk3,tchx84/debian-pkg-sugar-toolkit-gtk3,puneetgkaur/sugar-toolkit-gtk3,i5o/sugar-toolkit-gtk3,gusDuarte/sugar-toolkit-gtk3,gusDuarte/sugar-toolkit-gtk3,ceibal-tatu/sugar-toolkit-gtk3,puneetgkaur/sugar-toolkit-gtk3,quozl/sugar-toolkit-gtk3,Daksh/sugar-toolkit-gtk3,i5o/sugar-toolkit-gtk3,sugarlabs/sugar-toolkit-gtk3,samdroid-apps/sugar-toolkit-gtk3,tchx84/debian-pkg-sugar-toolkit-gtk3,ceibal-tatu/sugar-toolkit-gtk3,godiard/sugar-toolkit-gtk3,tchx84/sugar-toolkit-gtk3,quozl/sugar-toolkit-gtk3,manuq/sugar-toolkit-gtk3,tchx84/sugar-toolkit-gtk3,godiard/sugar-toolkit-gtk3,puneetgkaur/sugar-toolkit-gtk3,samdroid-apps/sugar-toolkit-gtk3,samdroid-apps/sugar-toolkit-gtk3,puneetgkaur/backup_sugar_sugartoolkit,manuq/sugar-toolkit-gtk3,sugarlabs/sugar-toolkit-gtk3,puneetgkaur/backup_sugar_sugartoolkit,gusDuarte/sugar-toolkit-gtk3