- Added flags for services and service permissions for peers

Flags are identity-related, meaning that all locations of the same peers have the same flags.
- It's now possible to tweak which services each peer can use. Service that can be disabled are
  forums/channels, discovery, anonymous routing.
- by default, peers have all flags on.
- fixed missing error msg in p3cfgmgr when serialisation fails.
- fixed bug in RemoteDirModel causing infinite loop to happen when group name is unknown




git-svn-id: http://svn.code.sf.net/p/retroshare/code/trunk@5924 b45a01b8-16f6-495d-af2f-9b41ad6348cc

libretroshare/src/dbase/cachestrapper.h

@@ -186,6 +186,9 @@ class CacheSource
 		bool  refreshCache(const CacheData &data);
 		bool 	clearCache(CacheId id);
 
+		/* controls if peer is an accepted receiver for cache items. Default is yes. To be overloaded. */
+		virtual bool isPeerAcceptedAsCacheReceiver(const std::string& peer_id)  { return true ; }
+
 			/* get private data */
 		std::string getCacheDir()    { return cacheDir;   }
 		bool        isMultiCache()   { return multiCache; }
@@ -272,6 +275,9 @@ class CacheStore
 
 			/* virtual functions overloaded by cache implementor */
 
+		/* controls if peer is an accepted provider for cache items. Default is yes. To be overloaded. */
+		virtual bool isPeerAcceptedAsCacheProvider(const std::string& peer_id)  { return true ; }
+
 		/*!
 		 * @param data cache data is stored here
 		 * @return false is failed (cache does not exist), otherwise true