models: new gem model

Signed-off-by: mkhropov <mkhropov@gmail.com>
Merge branch 'master' of https://github.com/mkhropov/Elem
res: fix some jsons

Signed-off-by: mkhropov <mkhropov@gmail.com>
veins: add more proper version

Now it drops small gems when dug. Now not item anymore (although it's still cancer and will be like this until GraphicalEntity overhaul). GEEEMS. Mor gems.

Signed-off-by: mkhropov <mkhropov@gmail.com>