Merge pull request #20 from Splinti/master

fixed spaces in .help
Merge pull request #21 from Splinti/master

Added text feedback
use callbacks to show play, stop, start. Thanks dafoxia :)
inform user if volume was set > 100 or < 0
code cleanup
show mpd errors in Mumble and database update information
Added stats command
Show current time/total time for seek command
use html entities for < and >