Fix for null reference exception sometimes occurring with Mass Storage display unit.

- Zero count zero limit items will now be removed from the Mass Storage UI when the popup is closed.

- Change lens requirement to manufacture display units down to crude organic lens to improve game balance.
- Minor bug fixes with display units.

Change lens requirement to manufacture display units down to crude organic lens to improve game balance.

Change lens requirement to manufacture display units down to crude organic lens to improve game balance.

- The Mass Storage UI popup now allows selecting the current hot bar slot and setting the slot item to that of an item in Mass Storage by clicking on the icon of the stored item. Use for fast and easy setting of the current Mass Storage Output item and without the hassle of having to get the item just to put it in a hot bar slot.

- Removing a Mass Storage Unit will now correctly transfer primary role and states to another Mass Storage Unit connected to the same mass storage cluster. This fixes the problem with the other Mass Storage Units on the same cluster now longer updating, losing states on game exit, and being unable to cycle through it on the popup.

- Add adjustable maximum cutter head capacity to Extractor Units.
- Fix appearance of incorrect icon on extractors with no drill motor upgrade.
- Extractors with no drill motor upgrade now show the motor name in yellow and display as a warning.

- Remote Storage and Extractor displays will now work while stored in the suit inventory panel.
- Remote Storage and Extractor displays will now work without having to aim at a block.
- Relax ESMS Level 2 research secondary requirement down from T4 Assist Machines to T3 Assist Machines.

- Extractor and Trencher Units will now properly update inventory counter for the extraction type used by the cargo lift.
- Pressing T to store for ore on a Extractor or Trencher Unit will now store correctly.
- Floating text will now be displayed for taking or storing items to Extractor and Trencher Units.