Add registration hints to user landing page

templates/contest/index.html

@@ -34,6 +34,14 @@
 						<p>
 						Get yourself registered on <strong>{{ contest.callQrg }}</strong>!
 						</p>
+                        <p>
+                            <ul>
+                                <li>Remember to SPELL all call signs, exchanges and names (Delta ...)</li>
+                                <li>For the registration transmit your call sign, exchange, exact location (e.g. room number), all operator names</li>
+                                <li>Your Exchange needs to be a TU Berlin building code (H, MA, TEL, ...) or DX</li>
+                                <li>During the constest ONLY use your exchange, not the exact location</li>
+                            </ul>
+                        </p>
 					</div>
 				</div>
 			</div>