Added .project files for /java, /mobile and /wiki to make it possible to

import these as projects into eclipse. Additionally added
filteredResources rules to hide subproject stuff from top level projects
(this fixed an problem that causes resources to be found twice in a
nested project setup).

.project

@@ -1,11 +1,31 @@
-<?xml version="1.0" encoding="UTF-8"?>
-<projectDescription>
-	<name>sailing</name>
-	<comment></comment>
-	<projects>
-	</projects>
-	<buildSpec>
-	</buildSpec>
-	<natures>
-	</natures>
-</projectDescription>
+<?xml version="1.0" encoding="UTF-8"?>
+<projectDescription>
+	<name>sailing</name>
+	<comment></comment>
+	<projects>
+	</projects>
+	<buildSpec>
+	</buildSpec>
+	<natures>
+	</natures>
+	<filteredResources>
+		<filter>
+			<id>1447316281613</id>
+			<name></name>
+			<type>10</type>
+			<matcher>
+				<id>org.eclipse.ui.ide.multiFilter</id>
+				<arguments>1.0-name-matches-false-false-java</arguments>
+			</matcher>
+		</filter>
+		<filter>
+			<id>1447316281626</id>
+			<name></name>
+			<type>10</type>
+			<matcher>
+				<id>org.eclipse.ui.ide.multiFilter</id>
+				<arguments>1.0-name-matches-false-false-mobile</arguments>
+			</matcher>
+		</filter>
+	</filteredResources>
+</projectDescription>