[sysadmin nav] add icon for 'Logs'
[sysadmin nav] add icon for 'Logs'

Chilledheart/seahub,cloudcopy/seahub,cloudcopy/seahub,Chilledheart/seahub,Chilledheart/seahub,miurahr/seahub,madflow/seahub,miurahr/seahub,Chilledheart/seahub,madflow/seahub,madflow/seahub,cloudcopy/seahub,miurahr/seahub,madflow/seahub,miurahr/seahub,madflow/seahub,cloudcopy/seahub,Chilledheart/seahub