French translation : Grammar,typo fixes and useless file removal
Merge branch 'master' of https://github.com/discourse/discourse
Added new translations and fixed typo/grammar
Sign the auth token cookie and make it httpOnly
update topic-progress z-index to show up in front

of all other items (especially the read-icon)
typo [skip-ci]
copyedits on README
Merge pull request #218 from ZogStriP/patch-3

[skip-ci] update topic-progress z-index to show up in front...
Merge pull request #219 from ZogStriP/patch-4

typo [skip-ci]
Merge pull request #211 from Shahor/master

French translation fixes
Merge pull request #215 from tms/auth-token-changes

Sign the auth token cookie and make it httpOnly
Merge pull request #220 from ZogStriP/patch-5

copyedits on README
Add site_setting to disable version checks
Show empty categories to those who can create them (admins/mods)