Remove all whitespace

The results of running this command::

    find . -name \*.js -print0 | xargs -0 perl -p -i -e "s|[ \t]+$||"

(Split from #136)
Merge pull request #139 from acdha/whitespace-eradication

Strip trailing whitespace (see #136)
Merge branch 'master' into raf

Fixed Conflicts:
	src/viewer.js