Improved Spaceship Transfer and Various Bugfixes

This adds a feature that has been requested a couple times: ability to transfer a specific number of pixels in the Spaceship Inventory Screen! I think I found a pretty good way to do it, but let me know what you think; I'll probably add some more details.

I also have been doing a bunch of bugfixes and quality-of-life things from what was reported during Next Fest. Here are some of them:

• Quality-of-Life: added a setting for lessening flashing when using laser or rocket launcher in darkness

• Quality-of-Life: added hint to the Upgrade Tooltip to make sure people know they can hold Shift to freeze the tooltip and click on the materials to open the Guide (appears if you have the Material Guide upgrade already)

• BUGFIX: added fix for a bug where the Hand tool could disappear from the toolbox

• BUGFIX: added procgen rule to ensure that there is at least one Ruby source room in the first layer of the Caves (so we can always make the Laser upgrade)

• BUGFIX: fixed issue where exiting to the main menu and then creating a new world would result in duplicated spaceships until the client restarted

• BUGFIX: put in more checks for the Material Guide upgrade in UI places where you can click to warp to it

• BUGFIX: Cesium compounds (Cesium Carbonate and Cesium Chloride) had incorrect text, fixed from Cerium to Cesium

• BUGFIX: LiMn2O4 + H2SO4 reaction had incorrect output, changed to Manganese(II) Sulfate

• MISC: fixed some other minor visual bugs and added some additional hover feedback to UI elements

The next update is probably going to be an even bigger handy requested new feature, so stay tuned for that one soon! :)