[Improvement] Nice to have features

[pskLana]

• The opportunity to upload the dataset (If it is planned in the future, maybe it could be written as an answer that it is in development. Now it is just "Something went wrong with that request. Please try again later.")
• Loading the dataset by writing "load dataset_name". Now it loads only if you write exactly "load dataset_name dataset". I guess both should be possible for loading the dataset.
• When I asked "bar chart on current table", it answered "How many items would you like to see?". It is not clear what are 'items' there. Why should I use only one of these options and cannot write the number? If I write the number, after that it can ask first or last or random.
  
• It is hard to understand what you mean:
  
  After thinking for 3 minutes I got it, although it was easier to try.
• Users are lazy. Now I have to type one of these options "Which option do you need (Bins / Non Unique)?", would be easier "Which option do you need (Bins(b) / Non Unique(n))?" -> "b" for example. Or (1) or (2).
• Users are lazy 2. "Which column values should be mapped to X-Axis?" -> would be nice to have an opportunity to click on a column name. Like to have two options: "Which column values should be mapped to X-Axis? click on column name or type it". Same for Y-Axis.
• An opportunity to UNDO the action: with some key word/ hotkey/ button.
• Bot confusion. I am not sure it is a bug or it works as it should. The bot is confused after the unknown answer and cannot proceed with the last question from him:
  
  
• Why I cannot reflect the value from the cell directly? instead only three options: Count Of / Average / Sum Of.