[1.7] blocks.json is not properly orienting textures and/or assigning blockshape

Verification builds: 1.7.0.2 - R7 Beta 21

Summary:

Portions of the file "blocks.json" in resource packs are no longer read in this version including orientation of textures and/or blockshape

Impact:

This breaks the "fake chests" in Last Stand.

Repro Steps:

1. Purchase and download Last Stand from the store.
2. Turn on cheats and create the world
3. /tp 3003 14 2987
4. Observe the fake chest in front of you (which is actually Brown Glazed Terracotta). In 1.6 and below it is correctly oriented because the blocks.json changes the blockshape to be that of "tree" and edits the textures so that it will always face the correct direction.

Observed Results:

The brown glazed terracotta texture is not facing the correct direction.

Expected Results:

The brown glazed terracotta would behave aesthetically just like a chest.

Screenshots/Videos attached: Yes

Regression Build: 1.6.0.8

Here is the entire blocks.json: 

 {{ "brown_glazed_terracotta" : {  "blockshape" : "tree",      "textures" : { "up" : "chest_inventory_top", "down" : "chest_inventory_top", "north" : "chest_inventory_front",  "south" : "chest_inventory_side", "west" : "chest_inventory_side",  "east" : "chest_inventory_side"}, "sound": "wood" }}