Average In-Portal installation consists of following folders:

admin - system presets and index.php file to allow access to Admin Console by going to /admin/ url
core - all In-Portal's Admin UI plus
core/kernel - core PHP classes that allows In-Portal to operate (e.g. event handling code, template parser, etc.)
modules - each sub-folder is a specific module
themes - each sub-folder is a Front-End theme
tools - misc command-line tools

Based on this we have a problem, because "core" folder is a module from one side and should be located under "modules/core" folder instead, but it's also a kernel, that can work without "core" module itself.

I'm proposing to:

move "core/kernel" folder to "kernel"
move "core" folder to "modules/core"

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