SaVi satellite constellation visualizer savi-dev

Tweaking TLE dialog to say Close, with matching tweaks to
utils special-case put-button-right code and manual screenshot.

Defaulting to a larger coverage map size now that screens are larger.

Improving the options for loading in existing TLEs from Celestrak.
This is all a bit pointless now Celestrak has a way better web-based
viewer - but that doesn't draw coverage circles... yet.

Minor wording tweak.

Tweaking deploy third option in starlink script
to match kuiper - just change a variable.

Fixing tag after issuing
svn propset svn:keywords Id amazon-project-kuiper-first.tcl

Making the TEXUREMAP note about netpbm for Blue Marble image
decompressing a biut more obvious.

Id tag - this time for sure?

Will this get the Id tag to work?

Adding first cut at simulating Amazon's Project Kuiper,
based on recent July 2019 FCC filing. Also reorganised
the constellations menu a little to accommodate it.