SSTU - Shadow Space Technologies Unlimited

* MAJOR CHANGE - Update included version of KSPWheel to latest (0.9.4.15).
* FIX - SRB thrust / burn time on MSRBs should now be correct, as well as using whatever ISP is specified in the config.
* FIX - SRB custom thrust curves should now update symmetry counterparts appropriately.
* FIX - Re-add the 'gold' nosecone texture/texture-set-configs for MFT tanks.  Still using old specular shader so the textures don't quite match, but is close enough for now (until I can get all the shader stuff worked out).
* FIX - MFT/MSRB/MUS/MEC -- Should no longer need to drop a part before it can be surface attached.
* CHANGE - Update a few values in the SC-E wheel configs for the changes to KSPWheel
* CHANGE - Add a slider to adjust the percentage of the 'support' tank in the MUS tanks.  This allows for adding/removing monoprop and EC easily from the main part-action-window.
* CHANGE - Add EL workshop patch by Sudragon, adds workshop to HAB parts
* CHANGE - Minor config cleanups to HAB and CFG parts.  Add crew capacity to description.
* NEW PART - RD-180 Engine - moderate thrust kerolox lifter engine, with decent ISP.  Still a bit WIP, might see a few texture and config revisions.