Upgrade lodash to v4 and lint more files (#8495)

* common: import lodash modules separately

* remove test/content from .eslintignore, fix with eslint --fix content/index

* lint test/content

* lint content/index except for lodash methods

* upgrade server/models

* upgrade server/middlewares and server/libs

* port server/controllers/top-level

* port server/controllers/api-v3

* port views and tests

* client old port lodash and _(, missing _.

* upgrade client-old

* port common/script (root level files only)

* port common/script/fns

* port common/libs

* port common/script/ops

* port common/script/content and common/script/libs/shops.js

* misc fixes

* misc fixes

* misc fixes

* more tests fixes

* fix payments test stubbing, down to 2 failing tests

* remove more instances of lodash wrapping

* fix bug where toObject does not clone object

* fix tests

* upgrade migration or add lodash 4 note

* update shrinkwrap

* fix linting

* upgrade eslint-config-habitrpg

* update shrinkwrap

* recompile shrinkwrap

website/client-old/js/services/guideServices.js

@@ -184,7 +184,7 @@ function($rootScope, User, $timeout, $state, Analytics, Notification, Shared, So
   }
 
   _.each(chapters, function(chapter, k){
-    _(chapter).flattenDeep().each(function(step, i) {
+    _(chapter).flattenDeep().forEach(function(step, i) {
       step.content = "<div><div class='" + (env.worldDmg.guide ? "npc_justin_broken" : "npc_justin") + " float-left'></div>" + step.content + "</div>";
       $(step.element).popover('destroy'); // destroy existing hover popovers so we can add our own
       step.onShow = function(){
@@ -232,7 +232,7 @@ function($rootScope, User, $timeout, $state, Analytics, Notification, Shared, So
           User.user.fns.updateStats(User.user.stats);
         }
       }
-    }).value();
+    });
   });
 
   var tour = {};