Improved 4-compartment Storage Box

####Improved 4-compartment Stroage Box
Another improved version of @TheSameNameTwice boxes.(https://www.thingiverse.com/thesamenametwice/designs), remixed it improving assembly procedure and reducing some weak points.

#####1. Top cover improved closing latch:
The lever is now longer, to have a smoother closure and more durability. Moreover the latch has a 'B' structure to support flexibility without breaking easily.

#####2. Bottom box has three improvements:
- The hinge is supported by three sturdy and smooth inserts coming from the bottom, increasing durability and avoiding breaking it during first assembly.
- Additionally I carved a V shape insert area to have a better hinge snap-in during assembly.
- Finally the front latching area is now improved a little because it was too thin in the original model.

Printed with tree supports to improve plastic structure but they may be not used.

Suggested a flexible material like **PETG** to ensure a better assembly of the hi