Fix display ACLs in WebAdmin
Enumerate convert_to_yaml command in list of commands
Check libyaml presence at configure time
Get rid of deprecated MySQL variable 'table_type'
Avoid case clause crash when loading permanent rooms
Do not try to start STUN application during config checks
Fix some type errors
Do not use functions from crypto module wherever possible
Correctly convert ACLs into YAML representation
add Pubsub data migration from mnesia to odbc (EJAB-1126)

By calling:
  ejd2odbc:export_pubsub("localhost","/tmp/aa.txt").
it will generate SQL files like these:
  /tmp/pubsub_item.txt
  /tmp/pubsub_node.txt
  /tmp/pubsub_state.txt

Conflicts:
	src/ejabberd_admin.erl
	src/ejd2odbc.erl