Improved GraviDispenser V2 Gate

I improved the "GraviDispenderV2Tor.stl" of https://www.thingiverse.com/thing:5192337/

Improvements:

• thicker, for a better quality feeling
• new form of the "button" handle at the top so that it can be better pressed
• a little "nose" that hinders a slightly slide out again

Only the gate STL file is attached here. Please take all other files directly from the original (take V2 there).