Update version strings, update NSIS file, move around extra files

The additional files packaged with the installer have been moved to
their own dir to separate them from the C++ source.

All licenses are now also included in the installer, as per the terms.

The version string in overlaycontroller.h has been updated to 2.8.0.

src/package_files/restartvrserver.bat

@@ -0,0 +1,24 @@
+@echo off
+
+REM First (optional) parameter is the vr runtime path
+REM When no parameter given use default steam install location
+IF [%1] == [] (
+	SET "steamVRPath=C:\Program Files (x86)\Steam\steamapps\common\SteamVR\"
+) ELSE (
+	SET "steamVRPath=%~1"
+)
+echo VR Runtime Path: %steamVRPath%
+echo.
+
+REM Kill vrmonitor.exe and give SteamVR some time for a graceful shutdown
+REM When no process was killed then exit (helps to prevent the taskkill clone bug)
+(taskkill /im vrmonitor.exe /f >nul 2>nul && echo Give SteamVR some time for a graceful shutdown ... && timeout /t 20) || exit
+
+REM Forcefully kill all remaining processes
+taskkill /im vrcompositor.exe /f >nul 2>nul
+taskkill /im vrdashboard.exe /f >nul 2>nul
+taskkill /im vrserver.exe /f >nul 2>nul
+
+REM Start vrmonitor.exe
+REM start "" "%steamVRPath%\bin\win32\vrmonitor.exe"
+start "" "%steamVRPath%\bin\win32\vrstartup.exe"