First strike for customizable minimum needs.
Merge remote-tracking branch 'origin/master' into min_needs_custom
Customize minimum needs works.
Make minimum needs in impact function as parameters.
Merge branch 'min_needs_custom'
get rid of RIAB
delete unnecessary stuff for docs from script
Unit test for minimum needs.
Merge branch 'master' of https://github.com/AIFDR/inasafe
Unload OSM downloader and converter when unload InaSAFE.
Fix small thing in impact functions.
Fixing typos of ITB in source rather than in rst files
Resolved merge conflicts with master