fakevim: In insert mode <C-J> and <C-M> are aliases for return key

Change-Id: I825d82c8577d2e9163248f4e968e177741683145
Reviewed-by: hjk <qthjk@ovi.com>

src/plugins/fakevim/fakevimhandler.cpp

@@ -4079,7 +4079,7 @@ EventResult FakeVimHandler::Private::handleInsertMode(const Input &input)
         setTargetColumn();
         breakEditBlock();
         m_lastInsertion.clear();
-    } else if (input.isReturn()) {
+    } else if (input.isReturn() || input.isControl('j') || input.isControl('m')) {
         joinPreviousEditBlock();
         m_submode = NoSubMode;
         insertText(QString("\n"));