Stackable DIMM holder for 35mm sticks

Remixed from rtuite design. Designed to hold 14 sticks of DIMM RAM. Main difference from original design is that this holder was expanded to hold 35 mm sticks (good fit for SDRAM/PC133 and DDR1 sticks). Also the upper half of stick holders was cleared a bit to avoid collision since some sticks have components at the edge. Multiple holders easily stacks on top of each other. The edge was also simplified to differentiate from original design.