Only set CEF settings to OpenSpaceTest if OpenSpace is compiled with tests (closes #778)

Do not disable RTTI on CEF targets
Do not for Unicode on CEF targets
More graceful handling of torrent classes in Sync module

modules/sync/syncmodule.h

@@ -27,7 +27,9 @@
 
 #include <openspace/util/openspacemodule.h>
 
+#ifdef SYNC_USE_LIBTORRENT
 #include <modules/sync/torrentclient.h>
+#endif // SYNC_USE_LIBTORRENT
 
 namespace openspace {
 
@@ -42,7 +44,9 @@ public:
     void addHttpSynchronizationRepository(std::string repository);
     std::vector<std::string> httpSynchronizationRepositories() const;
 
+#ifdef SYNC_USE_LIBTORRENT
     TorrentClient& torrentClient();
+#endif // SYNC_USE_LIBTORRENT
 
     std::vector<documentation::Documentation> documentations() const override;
 
@@ -51,7 +55,9 @@ protected:
     void internalDeinitialize() override;
 
 private:
+#ifdef SYNC_USE_LIBTORRENT
     TorrentClient _torrentClient;
+#endif // SYNC_USE_LIBTORRENT
     std::vector<std::string> _synchronizationRepositories;
     std::string _synchronizationRoot;
 };