Lots of performance improvements

(In the voice of the kid from sixth sense) I see string copies...

Apparently there are a lot of places we make unnecessary copies. This
fixes all of them.

Not sure how to split this up into smaller patches, or if it even needs
split up. It seems pretty easy to review to me, because basically every
diff is identical.

Change-Id: I22b4ae4f96f7e4082d2bc701098a04f7bed95369
Signed-off-by: Ed Tanous <ed@tanous.net>
Signed-off-by: Wludzik, Jozef <jozef.wludzik@intel.com>
diff --git a/include/sessions.hpp b/include/sessions.hpp
index 95459b3..88fd487 100644
--- a/include/sessions.hpp
+++ b/include/sessions.hpp
@@ -269,7 +269,7 @@
         return nullptr;
     }
 
-    void removeSession(std::shared_ptr<UserSession> session)
+    void removeSession(const std::shared_ptr<UserSession>& session)
     {
 #ifdef BMCWEB_ENABLE_IBM_MANAGEMENT_CONSOLE
         crow::ibm_mc_lock::Lock::getInstance().releaseLock(session->uniqueId);