Time series volume and time series fragment visualizers documentation

Hello all,

this is my first time writing in rst. I only checked the rendering of the text on an online editor so please let me know if there is anything that should be changed in the source.
Also, suggestions about the docs content are very welcome.

Cheers,
Robert


hum, `foo, while bar ` usually suggests a contrast between `foo` and `bar`, where in this paragraph `bar` is just supplementary info. Suggestion: `foo; bar`?