Update KGeography docbook to 16.04

remove entities package + kappname + kgeography
bump date + releaseinfo
remove somme comments
fix link to world map
replace KDEDIR with XDG_DATA_HOME
replace kde4-config with qtpaths
remove chapter faq
remove appendix
proofreading
use new repo urls scheme https://commits.kde.org/kgeography?path=tools/gen_map.pl
REVIEW:127871