Add Catalan language thanks to (and at the urgent request of) Jordi Coma. Also fix a few translation strings in the code.

Reminder:  Never mark the empty string for translation.


git-svn-id: https://dolphin-emu.googlecode.com/svn/trunk@7485 8ced0084-cf51-0410-be5f-012b33b47a6e

Source/Core/DolphinWX/Src/Frame.cpp

@@ -429,7 +429,7 @@ CFrame::CFrame(wxFrame* parent,
 	// Create cursors
 	#ifdef _WIN32
 		CreateCursor();
-		SetToolTip(_(""));
+		SetToolTip(wxT(""));
 		GetToolTip()->SetAutoPop(25000);
 	#endif