Merge pull request #121 from pjona/master

update changelog
mysql schema fixes. thanks go to LoLe
mysql schema fixes. thanks go to LoLe
indexes are not required
mysql schema fixes
fix typo
typo
fixed service type accounting
small adjustments
s/5GHz/5/g
removed borough types
distribution layer only interfaces for network nodes
we don't need bandwidth with 0 value
dodatkowe sprawdzanie czy plugin istnieje