Fix SHUT wells
Shut wells are not added to the well list and thus not considered in the
simulator.

The shut well test in test_wellsmanager is modified to assert this
behaviour.

BUG: This change provokes an assert in the EclipeWriter as number of
wells in wellstate is different from number of wells in the schedule.
SHUT wells returns 0
Shut wells returns 0 for bhp and rates in the EclipseWriter
Make the comment in test_wellsmanager more precise
The comment now precisly says that Shut wells are not added instead to
the well list instead of removed.
Merge pull request #670 from totto82/shut_wells

Fix SHUT wells
fix problem with solver reastart, variable was not reset.
Also, the time step does only grow moderately after a solver restart.
remove unused typedef to avoid compiler warning and keep code clean.
Merge pull request #671 from dr-robertk/PR/timestepcontrol-fixrestart

Fix solver restart counter.
Merge pull request #672 from dr-robertk/PR/remove-unused-typedef-warning

remove unused typedef to avoid compiler warning and keep code clean.
BUGFIX. Do not increase well index for shut wells.
Shut wells are not added to the well list and the well index should
therefore not be increased when well control is set. This is similar to
whats is done for shut wells in createWellsFromSpecs.
The wellmanager test is modified to account for not adding shut wells
Shut wells are not added to the well list and the well manager test is
modified accordinly.
Merge pull request #673 from totto82/shut_wells_fix

BUGFIX Shut wells