feat: added reordering in AlreadySeenEventsViewer

feat: finished groups for ECSs (from AlreadySeenEvents)

feat: added viewer for AlreadySeenEvents

refactor: changed construction of ColumnIDs

feat: changed display of progress in SingleStationEPGPanel

feat: added display of stations on the same transponder

handled some nullpointer warnings

new data

feat: finished Timer handling in SingleStationEPG

feat: finished SingleStationEPG

feat: finished data acquisition in SingleStationEPGPanel

bug: some smaller fixes in start routine

feat: added copying of content of movie table

changed label of Main Controller button in Station Switch

feat: Main Controller can be started from Staion Switch now

feat: ContextMenus of timers tables can be opened by VK_CONTEXT_MENU

data: new genre data

feat: added some icons to context menus

feat: extended context menu of TimersPanel

feat: added some actions for selection of multiple timers

feat: made AbstractControlPanel switchable

feat: adapted to Timers.Timer.duration (double)

fix: output of new type OptionalValue

feat: added storage of EPG event genres

feat: some minor GUI improvements

feat: some new tasks added to TODO

feat: added "Update Timers" button to EPGDialog

feat: added "Delete Movie" to table in MoviesPanel

feat: some GUI improvements

feat: defined min size for text fields in MessageControl