Bugfixes and updates

This removes the ability of the user to set and use the ControlType.
ControlType can be either Load or SetPoint, if it is SetPoint you need
to define SetpointManagers for each node within the Unitary System
which a user can no do from the GUI. So we are commenting out this
functionality for now.

This also fixes a small bug in forward translation and changes the mini
icon to an actual mini icon.
Add UnitarySystem to hvac_library

This adds various unitary system configurations to hvac_library.osm and
also updates the OpenStudioPolicy slightly.

The added configurations are:
Unitary - DX Heat Pump - Cycling - Elec reheat
Unitary - DX Heat Pump (Two Speed cooling) - Cycling - Elec reheat
Unitary - Two Speed DX cooling - Gas heat - Cycling - Elec reheat
Unitary - Two Speed DX cooling - Elec heat - Cycling - Elec reheat
Unitary - Single Speed DX cooling - Elec heat - Cycling - Elec reheat
Unitary - Single Speed DX cooling - Gas heat - Cycling - Elec reheat
Unitary - CW cooling - HW heating - VAV - HW reheat
Unitary - CW cooling - HW heating - CAV - HW reheat
Unitary - WaterToAir Heat Pump - Cycling - Elec reheat
Unitary - Elec heat - Cycling
Unitary - Gas heat - Cycling
Unitary - Two Speed DX cooling - Cycling - Elec reheat
Unitary - Single Speed DX cooling - Cycling - Elec reheat