Review round 1

[ellieallien]

Description file: context from koboloops - to be updated
Vignette: ggtitle is missing for 3/4 plots, and for boxplot I is too big (goes over the title)

Documentation: Roxygen style - For each function, the result of should be an argument @Result (instead of @param) so the user can see the difference when using the function (see screenshot)