make all preset theme defaults from the hwpi theme set #3226

#3226 

#### Changes

Changed the OS preset theme mapping:

* OS Scholar (personal) => HWPI Classic (was Clean Blue)
* OS Project (project) => HWPI Classic (was Clean Blue)
* Department Minimal (department) => HWPI Classic (was Ballard)

For reference, these are the (unchanged) HWP presets (from vsite_preset.spaces.inc):

* HWP Academic (department) => HWPI Classic
* HWP Administrative (department) => HWPI Classic
* HWP Lab/Research Group (project) => HWPI Modern
* HWP Project (project) => HWPI Modern