Re-enabled source id allocator check.

Re-enabled rotation of map at startup.
Changed race.xml schema so that yacht elements aren't required inside the participants element.
#story[1185]

racevisionGame/src/main/resources/mock/mockXML/schema/raceSchema.xsd

@@ -15,7 +15,7 @@
                 <xs:element name="Participants">
                     <xs:complexType>
                         <xs:sequence>
-                            <xs:element name="Yacht" maxOccurs="unbounded">
+                            <xs:element name="Yacht" maxOccurs="unbounded" minOccurs="0">
                                 <xs:complexType>
                                     <xs:attribute name="SourceID" type="xs:int" use="required"/>
                                     <xs:attribute name="Entry" type="xs:string"/>
@@ -77,4 +77,4 @@
             </xs:sequence>
         </xs:complexType>
     </xs:element>
-</xs:schema>
+</xs:schema>