gnome-shell: disable search for now, fixed number of elements

Signed-off-by: Marc-Antoine Perennou <Marc-Antoine@Perennou.com>
gnome-shell: simplify indexLabel thing

Signed-off-by: Marc-Antoine Perennou <Marc-Antoine@Perennou.com>
gnome-shell: nuke _maxSize

Signed-off-by: Marc-Antoine Perennou <Marc-Antoine@Perennou.com>