fixed #43: add delete button to local dir view in deck storage tab and in remote dir view in replays tab

deck editor is tab, replay viewer is tab, deck editor shown by default, cache window geometry between sessions, 'open this deck in deck editor' open in game

if cards in multiple zones are selected, don't create drag items for the ones you're not supposed to move

context menu for a message sender's name in chat; also display the user level icon next to the name; minor consistency and type-safety changes