Integrate nodetrails into the menu settings section (provided by the core menu module)

First this will fix the bugs: in #405234: Wrong function name called and missing argument.

Second: I don't like to extend the node-form, I rather prefer to extend the functionality of menu module ... at least from the users point of view. For me it seems to be more intuitive to do the menu-stuff in just one place.

Therefor I extended the node-form > "menu settings"-field-group:
The menu item will be also deleted if you delete the "Menu link title". If the "Menu link title" is left/set to blank and the "Parent item" was selected then the current node will be added to the "node trail". This means the current node behaves like a child of the parent item. If the node will be shown then the breadcrumb and the menu trail will set as expected.

The module weight is now set in nodetrail.install (there seems to be no update-funtion necessary, because the weight was already set in the hook_enable)

I've also created a README.txt It would be nice if you also can update the module Page, because it's a very useful module, but it was hard to find (maybe thats why it has such few users).

You can find all that stuff in the patch file: nodetrail.menu_settings.patch

Last point: I guess you are very busy ... at least you weren't be able to answer/fix the two pending issues. I don't want to see this module dying (I prefer to see this functionality in core ;) ). Thats why I offer you to take over maintaining this module (it will be my first one, so I'll find time in busy days). What do you think?