Add missing HGInventoryService responsible for creating My Suitcase to StandaloneHypergrid.ini
Move expired objects cleaning trigger to the maintenance thread of a region rather than it's main scene loop.

[Startup] default setting UpdateTempCleaningEveryNFrames becomes UpdateTempCleaningEveryNSeconds.
Default becomes 180s instead of effective 182s (which would also vary with any changes in frame time or extra long frames)