Rename "[Mm]ethod(s)" to "[Ff]unction(s)"

Only methods as programming functions are affected. Besides renaming
some actions like "Switch Between Function Declaration/Definition" this
mostly touches (api) code comments.

This is a follow-up patch to commit 872bfb7.

Change-Id: Icb65e8d73b59a022f8885b14df497169543a3b92
Reviewed-by: hjk <hjk121@nokiamail.com>

src/plugins/git/gitplugin.cpp

@@ -1352,7 +1352,7 @@ void GitPlugin::stashSnapshot()
         m_stashDialog->refresh(state.topLevel(), true);
 }
 
-// Create a non-modal dialog with refresh method or raise if it exists
+// Create a non-modal dialog with refresh function or raise if it exists
 template <class NonModalDialog>
     inline void showNonModalDialog(const QString &topLevel,
                                    QPointer<NonModalDialog> &dialog)