JavaPropsReader and PropsLoader sketches

- PropsLoaderImpl, and PropsLoaderFactory kinda transcribed Java->PHP, needs heavy testing
- PHP doesn't understand java.util.Properties, started writing a reader
Merge remote-tracking branch 'upstream/master' into php_props_loader
Props loader rewritten, some preliminary tests
Properties reader should be done now, needs testing
Composer and Monolog deps
Updated PHP PropsLoader code
Problems with full paths resolved, plus merge with upstream.
php propsloader interface
Merge remote-tracking branch 'upstream/master' into php_props_loader
Recursive loading of branch names
New interface, and other additions
Recursive branch files loading, plus a sanity test
New interface, and other additions
New Java changes reflected in php, implemented Iterator interface
Merge branch 'php_props_loader'

Conflicts:
	php/Core/PropsLoaderFactory.php
Merge branch 'sbt_bash_loading'

Conflicts:
	java/sbt.sh
Refactoring, given up on loading props with getenv()