[IM] Not allowing to change reseller state if resller have resold customers
Merge branch 'nf-resellers' of https://github.com/inex/IXP-Manager into nf-resellers
Merge branch 'nf-resellers' of https://github.com/inex/IXP-Manager into nf-resellers
[IM] Updating entities and proxies after db schema canges
[IM] Showing reseller information in customer overview. [Solves IXP-1]