Move global JS object creation to a separate namespace

src/GlobalJsObject.cpp

+#include "GlobalJsObject.h"
+
+using namespace AdblockPlus;
+
+v8::Handle<v8::ObjectTemplate> GlobalJsObject::Create(
+  ErrorCallback& errorCallback)
+{
+  v8::HandleScope handleScope;
+  const v8::Handle<v8::ObjectTemplate> global = v8::ObjectTemplate::New();
+  const v8::Handle<v8::ObjectTemplate> console =
+    AdblockPlus::ConsoleJsObject::Create(errorCallback);
+  global->Set(v8::String::New("console"), console);
+  return handleScope.Close(global);
+}