[EXPLORER] Simplify the current-shell-is-explorer check when trying to start the auto-start programs, by using the existing code.
[USERINIT][EXPLORER] Fix auto startup of Start Menu (#594) - Remove code for Start-Menu auto-startup items from userinit and put it where it belongs: in explorer. CORE-10839
[EXPLORER] Remove trailing whitespace.
[EXPLORER] -Rewrite taskbar settings routines and dialog - Rewrite the taskbar settings and start menu settings property sheets. - All settings in the taskbar settings property sheet can be loaded and saved properly except for the quick launch one which will be implemented later. - Implement toggling lock, autohide and always on top. The rest will be implemented later.
Git conversion: Make reactos the root directory, move rosapps, rostests, wallpapers into modules, and delete rossubsys.