Linked backend to frontend and fixed basic formatting in few files

src/api/projectData.php

@@ -1,16 +1,19 @@
 <?php
+namespace api;
+use PDO;
+
 require_once "./config.php";
 
 /**
  * Project Data Class
  * Define all functions which either get, update, create or delete timeline data
  */
-class ProjectData
+class projectData
 {
     function getProjectData()
     {
         $conn = dbConn();
-        $stmt = $conn->prepare("SELECT title, information, imgLocation, projectLink, githubLink FROM projects;");
+        $stmt = $conn->prepare("SELECT title, isMainProject, information, imgLocation, projectLink, githubLink FROM projects order by date LIMIT 4;");
         $stmt->execute();
 
         // set the resulting array to associative