A widget that shows a tree view of the contents of Taurus configuration files saved by TaurusMainWindow and lets the user edit the values of the configuration keys
Loads a configuration stored in a file and creates the tree.
(str) Name of the file. If None is given the user is prompted for a file.
Replaces temporary file with the original file and builds again the configuration tree.
Replaces original file with temporary file (where changes were being saved).