Snippets : Improve saving button

[isontheline]

Feature description

From Vito by email :

Hi Arnaud,I just came across another potential UI improvement.  When saving a snippet, if you go back without saving you lose your updates.  I would suggest either reminding the user they have unsaved changes when they click on the back button or removing the save button and making the back button a trigger to ask the user if they would like to save or discard their changes.I think the reason I kept making this mistake is because when you select an “icon” there is no “save” button, the back button saves and takes you back.  Once you come back to the snippet screen the previous workflow is still in your head so you don’t even notice the save button.