Blender Git Loki

BGE: Add icons to collision shapes.

This patch adds icons to the physic collision shapes.
Adding a new capsule shape 'mesh_capsule' icon which represent the shape better then the metaballs icon.
And replace the metaballs icon for the Blender collision shape.

{F206628}

Reviewers: moguri, sybren, agoose77, lordloki, mont29, panzergame, campbellbarton

Reviewed By: lordloki, panzergame, campbellbarton

Projects: #game_engine, #game_ui, #user_interface

Differential Revision: https://developer.blender.org/D1403