Fixing hard coded translation of Filter/Clear

The translation of Clear for the filter was hard coded to "Cancelar" in
the demo.

I made this fix for English and Swedish in commit 7005ea2. This is for
the rest of the translations.

Also removing demo\swe.html which was added by mistake.
Fixing typos in readme.md

will likely broke  -> will likely brake
Svenska -> Swedish
Merge pull request #21 from DonKarlssonSan/master

Fixing hard coded translation of Filter/Clear