Merge pull request #615 from jeff1evesque/python_data_validator

#614: data_validator.py, remove unnecessary code
#620: web_img, correctly obtain 'filename'
#620: web_js, correctly obtain 'filename'
#620: web_scss, correctly obtain 'filename'
#620: web_img, obtain filename without path
Merge pull request #621 from jeff1evesque/bash

#620: Bash: get filename without the last file extension
#619: REAMDE.md, update linux packages with 'MariaDB'
Merge pull request #625 from jeff1evesque/doc_linux_packages

#619: Update linux packages with 'MariaDB'
#624: README.md, update 'Linux Packages' subsection
Merge pull request #626 from jeff1evesque/doc_linux_packages

#624: Update 'Linux Packages' subsection
#623: README.md, update GIT subsection
Merge pull request #627 from jeff1evesque/doc_git

#623: README.md, update GIT subsection
#622: style.scss, change error to be bold and red
Merge pull request #629 from jeff1evesque/scss_style

#622: style.scss, change error to be bold and red
#632: data_validator.py, update docblock