Sector View. Added options to hide vertical lines and out-of-range star names

changelog, cleanup
Merge pull request #2174 from UncleVasya/SectorView_tweak

Sector View tweak
ModelBody wasn't actually getting the list of old lights due to passing by copy instead of reference. Also just tidied it a bit.
Merge pull request #2179 from fluffyfreak/BugFixes

Some minor bug fixes.
Merge branch 'master' of https://github.com/pioneerspacesim/pioneer into UnifyHMaps