Merge pull request #606 from jeff1evesque/doc_jquery_validation

Documentation: jQuery Validation Subsection, fix typos
#603: style.scss, adjust css path to 'loading.gif'
#603: style.scss, adjust css path to 'loading.gif'
Merge pull request #607 from jeff1evesque/scss_style

#603: Correct reference to 'loading.gif' in 'style.scss'
#608: Bash 'web_img', implement 'extglob'
#608: Bash 'web_img', reorder code
#608: Bash 'web_img', do not minify 'gif' files
#608: Bash 'web_img', remove 'extglob' implementation
#608: Bash 'web_img', adjust 'file_extension' definition
#608: Bash 'web_img', use 'expansion' notation
Merge pull request #610 from jeff1evesque/bash_web_img

#608: Imagemin ruins '.gif' images on minification
#609: Bash 'web_img', implement 'while' loop, quote all expansion
#609: Bash 'web_js', implement 'while' loop, quote all expansion
#609: Bash 'web_scss', implement 'while' loop, quote all expansion
#609: Bash 'web_img', adjust docblock
#609: Bash 'web_js', adjust docblock
#609: Bash 'web_scss', adjust docblock
#609: Bash 'web_img', remove quote around 'file_with_path'
#609: Bash 'web_js', remove quote around 'file_with_path'
#609: Bash 'web_scss', remove quote around 'file_with_path'