[WIP] Composite Creation Implementation (Fixed issues that prevented application launch after rebase!)

[kuzniarz]

Fixes issues that prevented application launch after rebase

Context

The current state includes all the changes that were needed in terms of GUI components. It's still missing implementation considering gradle methods to make the creation of composites functional. After rebase this branch needed some fixes to make it launchable again.

[kuzniarz]

Fixing the header style issues that caused the build to fail just now