add intended list of tunes to include for bard; need to trim, re-encode,
and possibly crop
finalize set of tunes to add for bard.  re-encode, and crop to make them
small enough to include.  Should probably offer a second set as a 'full'
bard-tune pack.
add dulciphi's biome list, to better config the default templates
add power-drain mechanics to flywheel control blocks
slightly re-order power update order in torque tiles
update default values for torque tile power loss
quite a bit of work updating instruction manual with information on new
features
update name for windmill control block.  add localization entry for
windmill control and blades to language file
...
...
lots of updates to instruction manual
fix up parsing of images from zip template packs.  Closes #163
fix drafting station GUI to only allow survival-flagged structures,
Closes #161
clean up drafting station GUI.  Closes #162
add percent remaining / pass #/of# to survival-mode builder block.
Closes #164
update energy states and use for structure builder tile.
...
add rendering of survival-mode structure-builder work bounds.  Closes
#165
lots more work on instruction manual.  should be sufficiently updated
now.
remove transmission of template preview images to clients from ded.
servers.  Implementation was fubar.  Will need to revisit in the future.  
Clean up imports.