Small spelling fixes in code and comments
Concise formatting of /roster command
Merge remote-tracking branch 'tdi/master'
Removed hard dependency on libstrophe 0.8.6 from install-all.sh

Allows getting the latest libstrophe code including SCRAM-SHA-1
support
Removed bookmarks todo
Paging fixes

- Include empty line when showing end page
- Switch off paging when last line and empty line visible
Tidied console presence messages
Always update UI in event loop, removed updates from rest of code
Added back switching win on new outgoing message
Merge branch 'master' into xep-0223