Merge branch 'marijn-header' into 'master'

Added personal Header

See merge request !64

website/queries/header.php

@@ -0,0 +1,17 @@
+<?php
+function getHeaderInfo() {
+    $stmt = $GLOBALS["db"]->prepare("
+    SELECT
+      `fname`,
+      `lname`,
+      `profilepicture`
+    FROM
+      `user`
+    WHERE
+      `userID` = :userID
+    ");
+    $stmt->bindParam(":userID", $_SESSION["userID"]);
+    $stmt->execute();
+    return $stmt->fetch();
+
+}