[EVENTVWR] Improve behaviour on event item selection. (#4746)

CORE-18438

- Each event detail control stores its own "current" item index, so
that there can be different event detail dialogs showi

[EVENTVWR] Improve behaviour on event item selection. (#4746)

CORE-18438

- Each event detail control stores its own "current" item index, so
that there can be different event detail dialogs showing different
events concurrently (half-plemented; this is a Win7-like feature).
As such, give the index of the selected event item when sending
the EVT_DISPLAY message, instead of having the details dialog
retrieve everytime by itself the current selected item (that may
change in-between calls, and can trigger the "No Items in ListView"
error).

- When pressing "Prev"/"Next" buttons, detect whether we already are
at the top/bottom of the event log, and if so, prompt the user to
continue around.
Clear up any selected event in the list, before selecting the new
one. (Note: the event list supports multiple selection, for future
functionality.)

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[EVENTVWR] Simplify some duplicated code. (#4745)

[EVENTVWR] Update file headers.

[EVENTVWR] Additions for the Event Viewer.
CORE-11637, CORE-12269

- Implement support for remote connections to NT computers to view their
event logs (and the event logs settings). For the moment

[EVENTVWR] Additions for the Event Viewer.
CORE-11637, CORE-12269

- Implement support for remote connections to NT computers to view their
event logs (and the event logs settings). For the moment the remote
computer name specification is is only available via the command-line.
Note that the paths to the event log files need also to be translated
to network-share format.
- Implement loading and saving the settings of the event viewer.
- Implement showing/hiding the events description pane, the ListView
grid, and whether or not to save the EventViewer settings.
- Handle hypertext link click handling for the RichEdit edit box of the
events description dialog.

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[EVENTVWR] Code style only.

Git conversion: Make reactos the root directory, move rosapps, rostests, wallpapers into modules, and delete rossubsys.