removed LaTeX commands and fixed minor typos
fixed reference to bidirectional presence mode
removed LaTeX commands and fixed minor inconsistencies
Merge pull request #1 from tisba/conf-sessions

Chapter "Sessions" (conf-sessions)
Thanks
Merge pull request #3 from tisba/reports

Chapter "Statistics and Reports" (reports)
Fix conflict
removed LaTeX commands and fixed minor inconsistencies
Reorganize toctree, contents gone away, fix later
Remove contents due to reorganization, fix latex commands
Merge pull request #4 from tisba/conf-advanced-features

Chapter "Advanced Features" (conf-advanced-features)
Add target sec-options-label
Remove tags
Remove latex command
Remove latex command
Remove latex command
Remove latex commands
Fix wrong place for label
Remove latex commands
Remove latex commands
Remove latex command