Localize Textile quotes.

Used quote styles are pulled from the currently active
translation.

git-svn-id: http://textpattern.googlecode.com/svn/development/4.x@5578 2fea6a4d-a838-0410-917b-93a53c48e9d2
Don't hard code quotes into CSS styling

Let browser decide, based on language.

git-svn-id: http://textpattern.googlecode.com/svn/development/4.x@5579 2fea6a4d-a838-0410-917b-93a53c48e9d2
safe_strftime() preserves original locale options.

Fixes issue #391

git-svn-id: http://textpattern.googlecode.com/svn/development/4.x@5580 2fea6a4d-a838-0410-917b-93a53c48e9d2
Merge remote-tracking branch 'upstream/master'