reworked dialogs some more, no more layout object
renamed "branch" dialog to "confirmation" and simplified its API
editor windows no longer stop closing after renaming/moving the target path
fixed refresh bug when updating editor lines rangewise
fixed bug: typeahead selection only moves forward, not backward
fancier date display highlights most relevant information, takes less space
editor's page up and page down now move relative to scroll view
implemented page up/down keys for directory browser