wifi trigger - enabled regex

app/src/main/res/layout/activity_manage_trigger_wifi.xml

@@ -62,6 +62,16 @@
 
         </TableRow>
 
+        <TableRow>
+
+            <TextView />
+            <TextView
+                android:layout_width="match_parent"
+                android:layout_height="wrap_content"
+                android:text="@string/mayUseRegularExpressions"/>
+
+        </TableRow>
+
         <TableRow>
 
             <Button
@@ -81,7 +91,7 @@
     </TableLayout>
 
     <Button
-        android:id="@+id/btriggerWifiSave"
+        android:id="@+id/bTriggerWifiSave"
         android:layout_marginTop="@dimen/default_margin"
         android:layout_width="wrap_content"
         android:layout_height="wrap_content"

app/src/main/res/values/strings.xml

@@ -840,4 +840,5 @@
     <string name="keepDeviceAwake">Keep device awake</string>
     <string name="wakeLockTimeout">Specify timeout</string>
     <string name="wakeLockExplanation">Activate will keep the screen on while deactivate will let it turn off. For keeping it on you can either enter a duration after which it may turn off again or you can keep it on indefinitely. In the latter case you would need to create another keep-awake action (in this or another rule) in which you select deactivate.</string>
+    <string name="mayUseRegularExpressions">You may also enter a regular expression here.</string>
 </resources>