Fix /xhtml
Add a show_s2s_errors config option (cf #2182)
Make /affiliation and /role non-blocking (fix #2235)
Display the “dev” docutmentation directory in the index
Rename 'normal_chatstate' event to 'conversation_chatstate'

for consistency
Fix the documentation for Alt-C/Alt-D
Add a CHAR_NEW_TEXT_SEPARATOR theming option
FIX XHTML ISSUES DUE TO A SLEEKXMPP UPDATE

(THE NAMESPACE WAS NOT PRESENT ANYMORE)