Fix "try again" button in "reconnected to fast" dialog trying to connect to port 0
increase width on medium/large templates by a couple of hundred px. should help
issue #625 a bit. Shouldn't increase large any more tho, since we are at 4096 and would increase memory unnecessarily.
Default to random guest username in all places net/nick is fetched. Fixes
issue #588
Quick and dirty fix for fact that we no longer prompt for a username on connect, so blank username simply errors on connect.