Update themes and add options

[mdmintz]

Update themes and add options

• Update the default theme for Demo Mode notifications
  --> ac83486
  --> This resolves Back to the "Future" theme (SB Messenger notifications) #1641
• Preload jQuery during Demo Mode on page loads
  --> 1173c16
  --> This resolves Preload jQuery during Demo Mode on page loads #1644
• Add "--rcs" option to reuse session for tests in same class
  --> 95c336e
  --> This resolves Add "--rcs" option to reuse the browser session for tests in the same class #1642
• Output the last page during test failures in verbose mode
  --> 9338fcb
  --> This resolves In verbose mode ("-v"), the last page should be displayed in the console output for failures #1643
• Refresh Python dependencies
  --> 62ca490
• Update several examples
• Update a lot of documentation