Shift-click merge fix

Shift-clicking will merge same item ids with different damage values,
taking the damage value from the inventory item.
Bowls also work with shift-click now

also did some code cleanup.
Registering TFC Wooden Buckets as a Water container
Adding Util function for handling registered containers
Translation

Add German and Russian
Modifications to Spanish
Between 8% and 33% for Dutch, Italian, Japanese, Romanian and Serbian

Credits:
French: AliceInGame with anonymous help
German: Three_Pounds & _Tsigje_
Russian: Jee_Host, transcengopher & politehnik
Spanish: SrNice & MiguelSnake & Mastropiero
Merge pull request #102 from aliceingame/master

Translation
Merge pull request #98 from emris/ShiftClickFoodPrep

Bowls also work with shift-click now
Merge pull request #99 from emris/ShiftClickMerge

Shift-click merge fix
Fixed all barrels breaking into Oak Barrels instead of their proper wood type
Merge pull request #103 from ShadowDrakken/ForgeLiquids

Fixed barrels turning into Oak - Registered Wooden Buckets (Water) with Forge