Reorganized core/ directory, it was too fatty already

-Removed FuncRef, since Callable makes it obsolete
-Removed int_types.h as its obsolete in c++11+
-Changed color names code

editor/debugger/editor_debugger_server.h

@@ -32,7 +32,7 @@
 #define EDITOR_DEBUGGER_CONNECTION_H
 
 #include "core/debugger/remote_debugger_peer.h"
-#include "core/reference.h"
+#include "core/object/reference.h"
 
 class EditorDebuggerServer : public Reference {
 public:

editor/debugger/editor_performance_profiler.h

@@ -31,8 +31,8 @@
 #ifndef EDITOR_PERFORMANCE_PROFILER_H
 #define EDITOR_PERFORMANCE_PROFILER_H
 
-#include "core/map.h"
-#include "core/ordered_hash_map.h"
+#include "core/templates/map.h"
+#include "core/templates/ordered_hash_map.h"
 #include "main/performance.h"
 #include "scene/gui/control.h"
 #include "scene/gui/label.h"

editor/debugger/script_editor_debugger.cpp

@@ -30,11 +30,11 @@
 
 #include "script_editor_debugger.h"
 
+#include "core/config/project_settings.h"
 #include "core/debugger/debugger_marshalls.h"
 #include "core/debugger/remote_debugger.h"
 #include "core/io/marshalls.h"
-#include "core/project_settings.h"
-#include "core/ustring.h"
+#include "core/string/ustring.h"
 #include "editor/debugger/editor_network_profiler.h"
 #include "editor/debugger/editor_performance_profiler.h"
 #include "editor/debugger/editor_profiler.h"