Rename node based on first line of text

[saqimtiaz]

When saving a node, rename it based on the contents of the first line. Could be triggered by the firstline being a heading, or any text. Might be useful to provide a customizable template so that the node could be renamed for instance to <root>/<heading>.

The catch is that the UX differentiation between saving and exiting editing will need to be made clearer.