I/O priority control added to multi-selection context menu

As users may know, when selecting multiple processes at once the menu is a bit different. I had not yet added support for I/O priorities (current and default) to the multi-process selection. That is now done. It will be in the next beta.

As a side note, the Help menu will back on the far right, instead of Updates menu (I had a user email me, and he's right it is very non-standard how I have it).

The updater in the last beta or two truncates some text, so that is also fixed in this next beta.

This new beta has been issued as v4.09.37 beta. Another one is likely coming quickly. I am not far from final.