Fixed shift click for Ceramic Vessels
Added Forge SolidSide method to metal sheet blocks and corrected ItemGrill placement validation.
Corrected Bismuth and Bismuth Bronze Sheet textures being flipped. Reduced memory consumption slightly by getting rid of the double registering of metal sheets.
Fix starvation on world entry.

The player would starve on world entry under specific circumstances.
To reproduce, load a world older than TFC_Time.startTime after
restarting Minecraft completely.
The players food stats were being loaded before the world time, thus
resetting the player timers.
I may be wrong but  I think this is a symptom of some other deeper
issue, I tried to find a place to update the worlds time before anything
calls getTotalTicks() but I could not find a solution. Hopefully someone
with more knowledge about this code base will find this useful.
Merge pull request #557 from simmpole/simmpole-fix

Fix starvation on world entry.
Merge pull request #556 from ProgrammerHero/vesselshiftclick

[0.79] Fixed shift click for Ceramic Vessels
Made gold pan accept new gravel blocks.

I also added a null check for the chunk data, as it was turning up null
for me and causing crashes on a couple of my test worlds.
Fix chunk data saving.

For some reason the chunk data tag was being wiped before being saved,
not sure why, probably just a mistake.
I just commented the line in question out, perhaps someone can explain
its purpose.
Merge branch 'Build79' of https://github.com/Deadrik/TFCraft into custom
Merge branch 'simmpole-fix' of https://github.com/simmpole/TFCraft into custom