REPY v1.1 - Reinforced body

Obijuan's REPY modules are great, but the 'body' part was a little fragile in its top zone. I added a reinforcement to make it less likely to break as we apply a little force (i.e by inserting the servo).

EDIT:The problem of the 'shifted' base is now fixed
EDIT:Bug found by Obijuan ( http://www.thingiverse.com/obijuan) fixed.