Merge pull request #505 from jeff1evesque/gitignore

#492: gitignore, minor comment change
#506: load_logic.php, adjust python references
Merge pull request #508 from jeff1evesque/php_load_logic

#506: load_logic.php, adjust python references
#507: load_dataset.php, adjust python references
Merge pull request #509 from jeff1evesque/php_load_dataset

#507: load_dataset.php, adjust python references
#510: Submodule, add 'scikit-learn' to '/library/' subdirectory
Merge pull request #511 from jeff1evesque/submodule_scikit_learn

#510: Add 'scikit-learn' to '/library/'
#503: Directory, move 'src/' subdirectory two levels up
Merge pull request #513 from jeff1evesque/directory_src

#503: Move 'src/' subdirectory two levels up
#487: php/index.php, update references to 'asset'
Merge pull request #514 from jeff1evesque/php_index

#487: php/index.php, update references to 'asset'
#478: bash_loader, add file
Merge pull request #515 from jeff1evesque/bash_bash_loader

#478: bash_loader, add file
#516: Bash, add file 'web'
#516: Bash, add 'prepathing'
#516: Bash, add commented-out code trace
#516: Bash, define 'minifying' logic for javascript
#478: bash_loader, make script executable to file owner
#478: bash_loader, change 'logs/' -> 'log/'
Merge pull request #517 from jeff1evesque/bash_bash_loader

#478: Fix subdirectory reference in 'bash_loader'