Show settings in overflow in ServerList due to complaints of consistency.
Merge pull request #51 from Zuko/master

Updated Polish translation
Added placeholder for french translation.
Merge branch 'master' of github.com:Morlunk/Plumble
Updated french placeholder.
Tablet (and big phone) layout for server list implemented.
Implemented a landscape dual-pane view for devices with > 480dp width.
Removed the old mechanic for automatically joining the last channel.
Certificates will now handle this server-side.
Improved management of channel activity.
Push-to-talk fixes for voice activity and push to talk.
Polish translation