RGG: Added nuclide line edit with auto completion
This allows users to select the nuclide via a line edit that has autocompletion.
The line edit replaces the nuclide combo boxes. The nuclide combo boxes were removed.
This allows users to select the nuclide via a line edit that has autocompletion.
The line edit replaces the nuclide combo boxes. The nuclide combo boxes were removed.