Patch 0.3.4.1

Intro
Hi again Pioneers! And we got the first hotfix going up for our patch to Experimental. This one mainly addresses that existing Fluid Freight Wagons still only picked up 500m3 instead of the new possible amount of 1600m3. Thanks for all the quick reports on the bugs! We are working on more fixes that will roll out when they are ready during the coming weeks.

Bug fixes

 * Already existing Fluid Freight Wagons should now be able to take 1600m3 instead of only 500m3
 * When switching the Multiple Hotbars with arrows they should no longer skip Hotbars
 * Fixed some icons having the wrong resolution