1.9.1 Feature & Bugfixes
  Added Way to save Filter
  Fixed FilterTree Bug when it wouldn't update
  Fixed FilterTree Bug when it wouldn't collapse
  Added OrganizeFilterDialog
  Fixed Bug where no Errors are shwon when they happen before Mainframe creation
  Fixed DisplayString of OnlinescoreFilter
  Fixed CustomViewedFilter AV (was not using new Tribool viewed-state)
  Fixed Bug where DIalog-FInish-Listener was called more than one time
    => cause of many strange behaviours
  Updated .gitignore for *.flst files