Fixed "unnamed" and "enter your name" in userlist
Merge branch 'develop' of https://github.com/ether/etherpad-lite into hardcoded-i18n
Use 'html10n' instead of '_', i10nzed "unnamed author(s)"
Added a comment to clearify *why* this works
Merge pull request #1407 from mluto/hardcoded-i18n

i10ze hardcoded message, update some messages on lang-change