Remove publish task

It's really hard to get it right so now it's up to the build task to
publish its files as soon as it finished the build.
ircbot: Show output link only when the task fails

Otherwise show nothing unless the task name is "build" in that case
post a link to the publish area.
Add promote task

Copies a build task output to the release storage.
Install IRC bot
ircbot: Actually run the command to promote
ircbot: Add build command
ircbot: Add help for commands
ircbot: Run resolve before build
ircbot: Allow some commands for voiced users or operators
ircbot: Run commands asynchronously

With subprocess.Popen
ircbot: Fix syntax
ircbot: Fixes
Adapt to latest changes in kickstarts