Rolling back. See 9366 and improve translation.

git-svn-id: https://hudson.dev.java.net/svn/hudson/trunk/hudson/main@9373 71c3de6d-444a-0410-be80-ed276b4c234a

core/src/main/resources/hudson/model/Hudson/manage_ja.properties

 Manage\ Hudson=Hudson\u306e\u7ba1\u7406
-Configure\ System=\u30b7\u30b9\u30c6\u30e0\u306e\u8a2d\u5b9a
-Configure\ Executors=\u540c\u6642\u5b9f\u884c\u6570\u306e\u8a2d\u5b9a
+System\ Configuration=\u30b7\u30b9\u30c6\u30e0\u306e\u8a2d\u5b9a
 Reload\ Configuration\ from\ Disk=\u8a2d\u5b9a\u306e\u518d\u8aad\u307f\u8fbc\u307f
 Discard\ all\ the\ loaded\ data\ in\ memory\ and\ reload\ everything\ from\ file\ system.=\
     \u30e1\u30e2\u30ea\u5185\u306b\u30ed\u30fc\u30c9\u3055\u308c\u305f\u5168\u3066\u306e\u30c7\u30fc\u30bf\u3092\u7834\u68c4\u3057\u3001\u30d5\u30a1\u30a4\u30eb\u30b7\u30b9\u30c6\u30e0\u304b\u3089\u518d\u30ed\u30fc\u30c9\u3057\u307e\u3059\u3002