[Pharo-dev] ...and load back

We can now (again) load and initialize Morphic and tools after unloading it. Main problems to solve: - Multilingual packages are problematic to load - ThemeIcons>>#iconSelectors message finds Object>>#systemIcon too for simplicity we do not load most of the tests and NativeBoost. https://ci.inria.fr/pharo-contribution/view/Pharo-Kernel-3.0/job/PharoKernel... -- Pavel