SSTU - Shadow Space Technologies Unlimited

## Release Highlights
* Adds finished models for inflatable torus centrifuge station parts.
* Fixes up an NRE and crash related to parts with integrated parachutes.

## Bugfixes and Code Changes
* FIX - Non-tracking solar panel module now counts as EC generator for stock contracts.
* FIX - Nulref on using CM-integrated parachutes.
* FIX - Highlighting related crash on parachute-equipped parts that jettison meshes as part of the deployment sequence.
* FIX - Editor highlighting (opacity) of SkinnedMeshRenderer parts (inflatable modules).
* FIX - SSTUInflatable - only disable 'inflate' button if module was properly inflated.

## Major Changes (potentially save-breaking)
* CHANGE - Torus station parts now use a separate sub-category in part naming scheme; ST-CFG (for centrifuge) will be used for all centrifuge parts, both inflatable and rigid.  **WARNING** The old torus parts using the HAB naming will be incompatible with the new parts, and any craft using the old parts WILL be broken by this update.

## New Parts
* NEW PARTS - SSTU-ST-CFG-A/B/C/D - Inflatable Toroidal Centrifuges of various diameters and crew capacities.  
  * Uses the SSTUInflatable module to allow for them to be 'kit-out' after initial construction, resulting in lower initial launch mass and easier to launch form factors.  
  * Include user-adjustable centrifuge rotation that can be adjusted between 0 and 10 rpm, both in editor and in flight.
  * Includes built-in batteries as well as user-configurable volume for storage (initially empty).  Currently can only be configured in the editor, and does not effect crew capacity.
  * Textures are not finished.
  * Balance will likely be updated in future releases.
  * Cost and tech-tree placement have not been balanced at all.

## Gameplay and Balance Changes
* CHANGE - Add 'Adapter-1-1-VA' to MFT-A tanks as an adapter type (both nose and mount).
* CHANGE - Add UI controls for rotation RPM to centrifuge parts.  Add code to allow for specification and updating of a secondary transform rotation, with a multiplier for the speed with which to animate the secondary (use negative value for opposite rotation).  Displays the calculated gravity for a given RPM.  Available both in editor and in flight.
* CHANGE - Merge PR from blowfish to add motor-scaling capabilities to ISDC (mesh size, resources, thrust).  Allows for better fine-tuning of separation motor thrust for specific uses.