Enable that scripts could also be open in the terminal. Fix typos.
Required for a new release, see also issue #5.
Remove "Show in Finder/File Explorer" from tree view
because it is now part of the preinstalled packages. Keep "Show in..."
entries in the tab where it isn't displayed by default yet.
Reorder and simplify title of "open with default app" menu entry.
Release 0.3.0!