Slide transitions are distracting and should be disabled

[markroepke]

RISE slides currently transition from left-to-right. This is distracting and misleading at times. Slide transitions should be disabled.

Slide transitions can be disabled by including the following in the notebook metadata:

{
  ...
  "rise": {
    ...,
    "transition": "none"
  }
}

[markroepke]

The following set of notebooks must be converted:

• [x] Introduction
• [x] Python and Jupyter Overview
• [x] Fundamentals
• [x] Packages, Modules, Methods, Functions
• [x] Importing Data
• [x] Selecting and Filtering Data
• [x] Working with Columns
• [x] Review
• [x] Summarizing Data
• [x] Summarizing Grouped Data
• [x] Joining Data
• [x] Exporting Data
• [x] Visualizing Data

[eswan18]

Final notebook fixed in 58aa94a1