Replace all NO-BREAK SPACE characters with normal spaces
Remove old data for Harrismith, just leaving the new line

I've checked with Geoff Kilpin that the more recent data is
more likely to be correct.
Use a version of chardet that exists
Add the QUESTIONS_CACHE directory setting
Allow a deeper zoom on the map page
Merge branch 'master' into staging-auto-deployed

Conflicts:
	pombola/south_africa/data/constituencies_and_offices/all_constituencies.csv