additions to the Small storage system

first of all, thanks to CaptainObvious for the great design (https://www.thingiverse.com/thing:1493275)

i quickly added some additions

• tall version of the ScrewBox 5x4
• bin with a size of 76x152 (2x4)
• tall bin with a size of 38x152 (1x4)
• tall bin with a size of 38x114 (1x3)

[edit]the 5x4 version of the screwbox has been added to the original thing by CaptainObvious, you can ignore this one (unless you like ascii stl files)