Add missing blocks from 1.10/1.11/1.12

[Gloorf]

Also removes duplicates & trailing whitespace in the blocks definitions

[TonyGravagno]

I'd take it but @walter is strongly adverse to whitespace changes, so you'll have to wait for his decision on a few of the lines.

[Gloorf]

I'm just removing a couple of trailing whitespaces (because usually there is none in the file), i'm not changing the whole indentation scheme of the document :)

[walterhiggins]

Hi @Gloorf
If you can reinstate stone and fence I'm happy to merge this.

[Gloorf]

stone (actually it's slab.stone) is already defined line 98 : https://github.com/walterhiggins/ScriptCraft/blob/development/src/main/js/modules/blocks.js#L98
and fence is actually overwritten by the fence object on line 323 : https://github.com/walterhiggins/ScriptCraft/blob/development/src/main/js/modules/blocks.js#L323 so it was never used anyway. I fixed the fence object itself (correct data value for oak, added dark oak & nether brick fence)

[jonathanperret]

Looks fine to me, although I'd have picked fence.netherbrick over fence.nether_brick since we already have slab.netherbrick.