Ajout des outils + premeire texture de l'atelier
Adding recipes
- Adding recipes for :
	topaze,saphir,lapis lazuli,rubis,jade,emeraude
- Now all recipes use bijoux:pioche

TODO: Fix textures

Signed-off-by: LeMagnesium <mg.minetest@gmail.com>
Fixing infotext messages
- Fixing the infotext messages :
	Atelier : No item, no tool
	Aucun item à tailler! : An item, no tool
	Aucun outil présent! : No item, a tool

Signed-off-by: LeMagnesium <mg.minetest@gmail.com>
Now using all the tools
- The craft recipes are now able to use all the tools

TODO: Fix textures (Ataron will) and use duration for craft, and pickaxe's wear dicrease.

Signed-off-by: LeMagnesium <mg.minetest@gmail.com>
Utilisation de fonctions
Adding a status system
- The status system stacks if the atelier-block is processing with the
  items. Enable means "activated", and Disabled means it is "unactivated".
Duration system implemented
- Atelier now uses duration in recipe's registering
Merge http://github.com/Ataron/bijoux into bijoux-Ataron

Conflicts:
	bijoux/atelier.lua
Fixing topaze's registering bug
- The topaze stone can now be used in atelier block

Signed-off-by: LeMagnesium <mg.minetest@gmail.com>
Fixing duration bug, and adding example durations
- Duration added for the stones

Signed-off-by: LeMagnesium <mg.minetest@gmail.com>
Merge http://github.com/Ataron/bijoux into bijoux-Ataron