rolled back underscore and added lodash in

services/web/package.json

@@ -29,6 +29,7 @@
     "http-proxy": "^1.8.1",
     "jade": "~1.3.1",
     "ldapjs": "^1.0.0",
+    "lodash": "^4.13.1",
     "logger-sharelatex": "git+https://github.com/sharelatex/logger-sharelatex.git#v1.3.1",
     "lynx": "0.1.1",
     "marked": "^0.3.3",
@@ -55,7 +56,7 @@
     "sixpack-client": "^1.0.0",
     "temp": "^0.8.3",
     "translations-sharelatex": "git+https://github.com/sharelatex/translations-sharelatex.git#master",
-    "underscore": "1.8.3",
+    "underscore": "1.6.0",
     "v8-profiler": "^5.2.3",
     "xml2js": "0.2.0"
   },