remove_chunks_dialog: Invoke Rstudio addin to remove chunks from the active source document
Description
The dialog will present a data table list of chunks in the source document. Select the rows
that correspond to the chunks that you wish to remove and hit the Remove chunks button
to remove them.
Returns TRUE if one or more chunks were removed, FALSE otherwise.
Details
When the dialog is started, if the cursor is positioned inside a chunk in the source document,
then the row corresponding to this chunk will be selected by default.