iOS: edit xml files & fix checkbox

contrib/mobile/iOS/Onelab/Parameter.mm

@@ -213,7 +213,7 @@
         [label setText:[NSString stringWithCString:number.getShortName().c_str() encoding:[NSString defaultCStringEncoding]]];
         name = [NSString stringWithCString:number.getName().c_str() encoding:[NSString defaultCStringEncoding]];
         checkbox = [[UISwitch alloc] init];
-        [checkbox setSelected:(number.getValue() == 1)];
+        [checkbox setOn:(number.getValue() == 1)];
         [checkbox addTarget:self action:@selector(valueChange:) forControlEvents:UIControlEventValueChanged];
     }
     return self;

contrib/mobile/iOS/Onelab/files/magnet/infos.xml

-<?xml version="1.0" encoding="UTF-8"?>
-<info>
-	<name>Magnet</name>
-	<description>Simple magnet example</description>
-<info>
+<?xml version="1.0" encoding="utf-8"?>
+
+<models>
+	<model>
+		<title>Magnet</title>
\ No newline at end of file
+		<summary>Simple magnet example.</summary>
+		<file type="pro">magnet.pro</file>
+	</model>
+</models>

contrib/mobile/iOS/Onelab/files/pmsm/infos.xml

-<?xml version="1.0" encoding="UTF-8"?>
-<info>
-	<name>Eight-pole permanent magnet synchronous machine</name>
-<info>
+<?xml version="1.0" encoding="utf-8"?>
+
+<models>
+	<model>
\ No newline at end of file
+		<title>Eight-pole permanent magnet synchronous machine</title>
+		<summary></summary>
+		<file type="geo">pmsm.geo</file>
+		<preview type="png">screenshot1_512.png</preview>
+		<url>http://onelab.info/wiki/Electric_Machines</url>
+	</model>
+</models>