Allow deleting channels
Allow deleting channels

Fixes #96

hb9kns/PyBitmessage,hb9kns/PyBitmessage,bmng-dev/PyBitmessage,debguy0x/PyBitmessage,timothyparez/PyBitmessage,debguy0x/PyBitmessage,timothyparez/PyBitmessage,torifier/PyBitmessage,torifier/PyBitmessage,debguy0x/PyBitmessage,bmng-dev/PyBitmessage,torifier/PyBitmessage,hb9kns/PyBitmessage,bmng-dev/PyBitmessage,torifier/PyBitmessage,timothyparez/PyBitmessage,debguy0x/PyBitmessage,hb9kns/PyBitmessage,timothyparez/PyBitmessage