remove nonexistent clickhandler nickAction
Remove unnecessary DOM element for plugin
Reduce number of watchers for buffer list

One watcher for each buffer
One additional watcher for each buffer without activity
Handle _buffer_localvar_{add,remov}ed events

fixes indendation of newly opened buffers
Merge pull request #299 from glowing-bear/bugfixesimprovementsandothermiscellanii

Bugfixes, Improvements, and other miscellanii