[BugFix] Fix an issue with symbol rendering (Thank to Floydman!)
[BugFix] Fix the Link book UI staying open when using an intra-linking book

THis is very likely to be the last build for 1.12. I've started rewriting Mystcraft for 1.15!

现在国内由苍尼玛义务搬运，更新了大部分的物品，百度盘http://pan.baidu.com/s/1o6DiZV0

Fixes flat symbol identifier

－修復扁平象徵的識別碼