Lots of comments, simplification and code changes

functions:
  Simplified and refactored many comments to make it more in line with
  the other sweeping comment changes currently being made.

  Small simplifications to various statements and conditionals.

  Removed __store_postion() as it's been incorporated much more simply
  in each operation.

  Simplified and refactored the number of parameters needed for
  __print_status() and __print_progress().

operations:
  Added a new postional parameter that eliminates the need to dynamically
  figure out the previous operation's row placement.

  Directly incorporated how an operation sends its current row placement
  to the job manager's file descriptor.

__scroll_terminal():
  Greatly simplified comments and how lines to scroll are determined.