bump underscore to 1.8.3

services/web/package.json

@@ -55,8 +55,7 @@
     "sixpack-client": "^1.0.0",
     "temp": "^0.8.3",
     "translations-sharelatex": "git+https://github.com/sharelatex/translations-sharelatex.git#master",
-    "underscore": "1.6.0",
-    "underscore.string": "^3.0.2",
+    "underscore": "1.8.3",
     "v8-profiler": "^5.2.3",
     "xml2js": "0.2.0"
   },