Core/Commands: Add new spy command (#1263)

Add a new spy command for game masters and administrators to receive all conversations of followed players.

How to use:

- Use command .spy follow <characterName> with a GM 
- Make that player whisper another player
- You (GM) should receive the message sent
- Use command .spy status. You should get a list with the test subject's name in it.
- Use command .spy unfollow <characterName>
- You should not receive any more messages sent or received by that player


* Core/Commands: Add new spy command
* Importing pending sql
* Fix missing comma in SQL
* Fix travis compile: comment unused parameter

src/server/scripts/ScriptLoader.cpp

@@ -54,6 +54,7 @@ void AddSC_reload_commandscript();
 void AddSC_reset_commandscript();
 void AddSC_server_commandscript();
 void AddSC_spectator_commandscript();
+void AddSC_spy_scripts();
 void AddSC_tele_commandscript();
 void AddSC_ticket_commandscript();
 void AddSC_titles_commandscript();