Frontend for ModemManager daemon able to control specific modem functions
fixed runtime and buildtime deps
make NM optional, it's only needed for trafic counting
add connman as optional dep if someone uses it instead of NM
add support for ofono, the open-source GSM/UMTS daemon
Merge pull request #7 from V3n3RiX/master

Frontend for ModemManager daemon able to control specific modem functions