storage: NFS, using the checkbox to edit a share is not intuitive

[andreasn]

In the usability testing of NFS, we identified that all four participants struggled with using the checkmark button to trigger the edit mode of the list.

[andreasn]

Could be solved with the desired behaviour described #8562

[andreasn]

Some quotes from the test:

• "The checkmark is not intuitive, but provided there is nothing else.
• Not too sure about the checkbox. Once you get used to it, it's fine, but..
• Tried to click on the line. No success. Searching. Can't find where to edit. Thought the checkmark means to finish the task/confirm the action. If it was an edit icon, it would have been more straightforward.
• I'm confused about the checkmark button.
• I would expect it to click the row. Is this little checkbox thing a linuxism for editing in a table? I wouldn't have gone to it.
• This pencil means edit, more than this checkbox, if they do the same thing.
• The little checkbox next to the plus was not clear that it would modify items in the table. I would rather have clicked on individual entries. The pencil icon set my expectations that I would edit.
• The checkbox situation was confusing.
• I would change the checkbox, it wasn't obvious, possibly misleading."

[andreasn]