Do not insert for these cases:
* <Cursor>{
* namespace X <Cursor>
* if the next block is indented, like e.g.:
if (e) <Cursor>
g();
* on empty line if text before looks like a finished statement or
scope opening/end
Change-Id: Id9decc1e964a775724a929c2a3e79b5283105560
Reviewed-by: David Schulz <david.schulz@qt.io>