Each of the edit/home/new pages renders its save button differently. This makes it a common function with all the same possible render states (does the document have unsaved changes? Is it already saved? Was it auto-saved?).
- Common save button
- Adds the "save" button to /home page which wasn't there before
- Animates the "save" button in /home and /new when the user makes their first change to signal that yes, you do have to actually click the save button if you want to keep this.
- "reminder... you haven't saved for X minutes" still not functional on /new and /home since that involves more moving pieces.
