improv: General improvements to the menubar. Additions, changes, removals, reorderings.

img/checkmark.png

.../de/griefed/serverpackcreator/api/ConfigurationHandler.kt

serverpackcreator-gui/src/main/i18n/Gui_en_GB.properties

.../main/kotlin/de/griefed/serverpackcreator/gui/GuiProps.kt

...tlin/de/griefed/serverpackcreator/gui/window/MainFrame.kt

.../griefed/serverpackcreator/gui/window/menu/MainMenuBar.kt

...efed/serverpackcreator/gui/window/menu/about/AboutMenu.kt

...verpackcreator/gui/window/menu/about/MigrationInfoItem.kt

...ed/serverpackcreator/gui/window/menu/edit/EditIconItem.kt

...riefed/serverpackcreator/gui/window/menu/edit/EditMenu.kt

...verpackcreator/gui/window/menu/edit/EditPropertiesItem.kt

...serverpackcreator/gui/window/menu/edit/OpenModpackItem.kt

...creator/gui/window/menu/edit/UpdateDefaultModslistItem.kt

...d/serverpackcreator/gui/window/menu/file/ConfigChooser.kt

...rpackcreator/gui/window/menu/file/ConfigToHasteBinItem.kt

...riefed/serverpackcreator/gui/window/menu/file/FileMenu.kt

...erverpackcreator/gui/window/menu/file/HasteBinMenuItem.kt

...packcreator/gui/window/menu/file/MainLogToHasteBinItem.kt

...verpackcreator/gui/window/menu/view/OpenIconsDirectory.kt

...ckcreator/gui/window/menu/view/OpenPropertiesDirectory.kt