This makes sure styles are consistent for the editor and the quick fix
engine.

Without requiring ',' to be an electric character.

Task-number: QTCREATORBUG-1866
Reviewed-by: Roberto Raggi

Reviewed-by: Erik Verbruggen

Done-with: Tobias Hunger

Done-with: Thomas Hartmann

This will allow much faster indenting of selected areas as the state
doesn't have to be checked again for every line.

Reviewed-by: Roberto Raggi

Keep more information by using enter() instead of turnInto() when moving
from a *_start to *_open.

Done-with: Erik Verbruggen