Interactively select graph kind per column

[CermakM]

User story
As a Jupyter DataTables user,
I want to be able to dynamically select a chart type for a certain column
so that I have more control over the data and can explore it easily.

technical: @CermakM

Acceptance Criteria

• There is a button which allows users to interactively select kind of the graph to plot per each column of a DataTable
• The choice only allows to select chart kinds which are valid for the specific column
• The current graph is marked as active and cannot be selected again to avoid unncecessary redraws