add inheritance in Stage object
Add two kind of structure, remove unused lib
commit to sync
add a test on registered teams
clean menu
display global ranking of a division
edit playoff
display global ranking with playoff
display playoff stage
display dynamic stage (need style)
fix constant
Merge branch 'dr'

Conflicts:
	DR/sql/sqlCreateDR.php
	DR/sql/sqlInsertStageToDR.php
	DR/sql/sqlUpdateStageInfo.php
	DR/user/user.class.php