Complete virtual environment added to git. Updated all changes to file in frontend directory

frontend/app.py

@@ -0,0 +1,25 @@
+from flask import Flask, request, render_template, url_for, redirect
+
+app = Flask(__name__)
+
+@app.route("/")
+def groclist_home():
+	return render_template('index.html')
+
+@app.route("/welcome")
+def groclist_welcome():
+	return render_template("welcome.html")
+
+@app.route("/login", methods=['GET', 'POST'])
+def groclist_login():
+	error = None
+	if request.method == 'POST':
+		if request.form['username'] != 'admin' or request.form['password'] != 'admin':
+			error = 'Username of wachtwoord onbekend. Probeer opnieuw'
+		else:
+			return redirect(url_for('groclist_welcome'))
+	return render_template("login.html", error=error)
+
+# start server with run method
+if __name__ == "__main__":
+	app.run(debug=True)