[thebuggenie_hg_remote.py] Fixed linter errors:

- Mostly spacing-related.
- Use the range function instead of xrange (Python 2.7 -> Python 3.x).
- Script probably will not run correctly under Python 3.x, but at
least the linter will not get in the way when working on other
Python code in the project.

[mapping_generator.py] Initial implementation with support for showing tempalte information:

- Set-up Python project structure to make it easier to install and use
the Python scripts from within confines of a virtual environment.
- Set-up custom configuration for line breaks for Python file editing
when using GNU Emacs.

[factorio_manager.sh] Fix version extraction for Factorio 2.x:

- There are two lines beginning with the string "Version" - one is the
game version, while the other is the architecture
version (64-bit). This is a breaking change compared to the output
from Factorio 1.x.

[factorio_development.sh] Use Python 3 interpreter:

- Python 2.7 has been dropped from most distributions at this point,
and the old interpreter name will actually fail in most of them.

[factorio_manager.sh] Fixed loop interruption for the launch-loop command:

- Factorio has stopped returning non-zero value when stopped using
SIGINT (as of version 1.1.93).

[factorio_development.sh] Fixed switching back to development version in info file:

- The sed expression was a bit too trigger-happy in replacing version
strings used in dependencies.
- Bump the year in copyright notice.

[factorio_development.sh] Expand deployed files for new mods:

- Include stock text for a couple of sections in the README file.
- Mark build script as explicitly being released under a GPLv3
license.
- Include Emacs editor configuration file for setting the fill column
to a biter saner (larger) value.
- Include an empty control.lua file with helpful header stating
copyright and license (for easier copy/pasting from it).