Tests: Renamed unit/server_helpers to unit/helpers (#9145)

no issue

- nothing to explain 😁

Gruntfile.js

@@ -540,7 +540,7 @@ var overrides      = require('./core/server/overrides'),
         //
         // This also works for folders (although it isn't recursive), E.g.
         //
-        // `grunt test:unit/server_helpers`
+        // `grunt test:unit/helpers`
         //
         // Unit tests are run with [mocha](http://mochajs.org/) using
         // [should](https://github.com/visionmedia/should.js) to describe the tests in a highly readable style.

core/test/unit/helpers/navigation_spec.js

@@ -186,7 +186,7 @@ describe('{{navigation}} helper with custom template', function () {
 
     before(function (done) {
         hbs.express3({
-            partialsDir: [path.resolve(configUtils.config.get('paths').corePath, 'test/unit/server_helpers/test_tpl')]
+            partialsDir: [path.resolve(configUtils.config.get('paths').corePath, 'test/unit/helpers/test_tpl')]
         });
 
         hbs.cachePartials(function () {

core/test/unit/helpers/pagination_spec.js

@@ -123,7 +123,7 @@ describe('{{pagination}} helper', function () {
 
 describe('{{pagination}} helper with custom template', function () {
     before(function (done) {
-        hbs.express3({partialsDir: [path.resolve(configUtils.config.get('paths').corePath, 'test/unit/server_helpers/test_tpl')]});
+        hbs.express3({partialsDir: [path.resolve(configUtils.config.get('paths').corePath, 'test/unit/helpers/test_tpl')]});
 
         hbs.cachePartials(function () {
             done();