Merge branch 'master' of https://gitee.com/wjl2008_admin/tougao_web into pay

package.json

@@ -25,7 +25,9 @@
     "html2canvas": "^1.4.1",
     "install": "^0.13.0",
     "jszip": "^3.10.1",
+    "katex": "^0.16.21",
     "mammoth": "^1.5.1",
+    "mathlive": "^0.104.0",
     "mavon-editor": "^2.6.17",
     "multi-items-input": "^0.2.0",
     "pizzip": "^3.1.7",