TImeViz: Christian's suggestions

[cavart28]

Timeviz:

1. Add x and y axis ticks and label
2. Make selection possible on the plots
3. Allow the user to change the size of the plot (may be it is there already)
4. On the last version I played with, when playing sounds the marker would move on the picture but not continuously, rather by jumping. It would be nice to have something smoother

[cavart28]

5. Allow to pass a list of sample idx or timestamps and a marker would be placed at each on the graph, like the red lines on the pic below