Merge pull request #68 from Zuko/master

Updated Polish translation
Checks to disable database use of public servers.
Fixed check again.
Merge branch 'master' of github.com:Morlunk/Plumble
Returned the progress indicator for public server pinging.
Linkify text sent to chat.
Put even space between favourite and public servers.
Prompt user to ping for public server info.
Implemented support for server suppression and server-side
mute/deafen declarations.
Prevent channel spinner from being reset every time a channel is
updated. Kind of hackish.
Isolate notification strings.
Added auto-ping to public server list.
Execute server pings on separate threads. My god, this is fast =D.
Fixed crash with public server info pinging / racecar mode.
WOOOOOOOOOOOOOOOO
Translation update