Merge pull request #34 from neonbunny/master

Use NXDOMAIN exceptions to the reduce number of unnecessary queries for performance improvement. Fix copy & paste bug.
Merge pull request #35 from neonbunny/master

Added homoglyph support
Merge pull request #36 from neonbunny/master

Fixed off by one bug which prevented using confusables at the start of a...
state clearly it now needs Python 3.3 due to some of the recent patches - server upgraded now obviously
adding missing items to VS project
slightly simplied version of the @divemonkey patch as I didn't want to pesist to disk for #31 as it will add IO overhead which will rarley be needed (i.e. on server restart days)
small update to confirm safe browsing key supplied
fix last patch
remove the shadows from the css - looks better flatter
first attempt to resolve bug #39
second attempt to resolve bug #39
third attempt to resolve bug #39
fourth attempt to resolve bug #39
finally fix bug #39 correctly across all host types - CSPs are a PITA
fix a bug that neonbunny pointed out in commit cdab0ef45e1513c4b2c0382d7da3fb48ffc39754