Starfield fix and Milky Way

Fixed bug where more stars were generated at the poles.

Added 'Milky Way' band in sky, customisable with MILKY_WAY_WIDTH,
MILKY_WAY_INCLINATION and MILKY_WAY_RATIO consts in Generator.cpp.
Merge pull request #1152 from birarda/assignment

add debug for DS document root
Merge pull request #1153 from birarda/assignment

fix a broken domain-server build
Merge pull request #1142 from lordwaym/starfield-fix

Starfield fix and Milky Way
update to latest civetweb from source