Merge pull request #1 from Orvid/master

Non-Case Sensitive  Commands; Correct help of mute command; Debug call to write_roles_ini; Update .gitignore; Error handling reading/writing ini files.
Remove unnecesary function find_user_session and modified references to it to find_user; Add name to log of unhandled protocol class
Remove previous additions to mumble_read, rescue lost connection in listen method(not yet implemented)
Check if user not found in on_user_remove
Add method to clean up players that have disappeared from the server. Not being called at the moment though.
Make find_user case-insensitive
Find players using aliases
Update README