Removes unnecessary & from strings in settings widgets. These cause confusion and complicate translation. They are unnecessary as all dialogs allow efficient tabbing between elements.
Also add colons after several settings with input boxes and remove a hard stop.
Improve wording of strings based on translator feedback.
Fix case sensitive matching of CLI Export.
* Add combo menu button to apply an icon to children
- allow more options to apply icons (child groups, child entries)
- extend tests in TestGroup (applying icons for groups/entries only)
- prevent blue folder icon being set for entries (on entry creation only)
* Do not show the combo menu button for entries
