add feature to ignore buffers
surpress error when ignore-option is unset
Update irssinotifier.py

Support only_away, only send notifications if away.
Merge https://github.com/kangsterizer/weechat-irssinotifier

Support only_away, only send notifications if away.
Merge branch 'add-ignorelist' of https://github.com/prauscher/weechat-irssinotifier
Added Ignorelist feature

Conflicts:
	irssinotifier.py
Resolved:
	Settings-Conflict