Draft; Add Jest to EFSA

Resolves #329 (closed)

Also includes one unit test to see if Jest is running properly.

js/api/tests/eclipsefdn.adopters/mock/adopters-data.json

+[
+    {
+        "adopters": [
+            {
+                "homepage_url": "https://www.sap.com",
+                "logo": "logo-sap.png",
+                "logo_white": "logo-sap-white.png",
+                "name": "SAP"
+            }
+        ],
+        "logo": "https://projects.eclipse.org/sites/default/files/egit.png",
+        "name": "Eclipse EGit™: Git Integration for Eclipse",
+        "project_id": "technology.egit",
+        "url": "https://projects.eclipse.org/projects/technology.egit"
+    },
+    {
+        "adopters": [
+            {
+                "homepage_url": "https://www.sap.com",
+                "logo": "logo-sap.png",
+                "logo_white": "logo-sap-white.png",
+                "name": "SAP"
+            }
+        ],
+        "logo": "https://projects.eclipse.org/sites/default/files/jgit_0.png",
+        "name": "Eclipse JGit™: Java implementation of Git",
+        "project_id": "technology.jgit",
+        "url": "https://projects.eclipse.org/projects/technology.jgit"
+    },
+    {
+        "adopters": [
+            {
+                "homepage_url": "https://www.sap.com",
+                "logo": "logo-sap.png",
+                "logo_white": "logo-sap-white.png",
+                "name": "SAP"
+            }
+        ],
+        "logo": "https://projects.eclipse.org/sites/all/themes/solstice/public/images/logo/default.png",
+        "name": "Eclipse Memory Analyzer™",
+        "project_id": "tools.mat",
+        "url": "https://projects.eclipse.org/projects/tools.mat"
+    }
+]