Consistently use 'train' for DB (IRIS, bahn.de) and 'directions' for HAFAS

templates/journey.html.ep

@@ -269,7 +269,7 @@
 	% }
 	<div class="row">
 		<div class="col s12 grey-text">
-			<i class="material-icons tiny" aria-hidden="true"><%= $journey->{is_iris} ? 'train' : 'directions' %></i>
+			<i class="material-icons tiny" aria-hidden="true"><%= $journey->{is_hafas} ? 'directions' : 'train' %></i>
 			%= $journey->{backend_name} || 'IRIS'
 			#<%= $journey->{id} %>
 		</div>

templates/landingpage.html.ep

@@ -67,12 +67,7 @@
 							</div>
 						</div>
 						<div class="card-action">
-							% if ($user->{backend_id}) {
-								<a href="/account/select_backend?redirect_to=/" class="btn btn-flat"><i class="material-icons left" aria-hidden="true">directions</i><%= $user->{backend_name} %></a>
-							% }
-							% else {
-								<a href="/account/select_backend?redirect_to=/" class="btn btn-flat"><i class="material-icons left" aria-hidden="true">train</i>IRIS</a>
-							% }
+							<a href="/account/select_backend?redirect_to=/" class="btn btn-flat"><i class="material-icons left" aria-hidden="true"><%= $user->{backend_hafas} ? 'directions' : 'train' %></i><%= $user->{backend_name} // 'IRIS' %></a>
 							<button class="btn right waves-effect waves-light btn-flat" type="submit" name="action" value="departures">
 								<i class="material-icons left" aria-hidden="true">send</i>
 								Abfahrten

templates/legend.html.ep

@@ -15,11 +15,11 @@
 				</tr>
 				<tr>
 					<td><i class="material-icons">train</i></td>
-					<td>Backend: DB IRIS. Bevorzugte Datenquelle für (mindestens teilweise) innerdeutsche Zugfahrten.</td>
+					<td>Backend: Deutsche Bahn (bahn.de oder IRIS-TTS).</td>
 				</tr>
 				<tr>
 					<td><i class="material-icons">directions</i></td>
-					<td>Backend: DB HAFAS. Bevorzugte Datenquelle für Nahverkehr und vollständig außerdeutsche Zugfahrten. Weniger detailliert als IRIS.</td>
+					<td>Backend: HAFAS.</td>
 				</tr>
 			</tbody>
 		</table>