Conflicts:
	wiki/src/doc/about/features.fr.po
	wiki/src/doc/first_steps/upgrade.pt.po
	wiki/src/support/known_issues.de.po
	wiki/src/support/known_issues.fr.po
	wiki/src/support/known_issues.mdwn
	wiki/src/support/known_issues.pt.po

Support running language_statistics.sh from the root of the repository too, and error out if it's not run from a supported place.

This also contains some re-wrapping noise. Sorry.

And some simple grammar correction.