Save under $HOME under a dotfolder

* unsaved edits are then on a persistent
file system
* and 'out of the way' since the folder won't
be visible unless the user is looking for it

Signed-off-by: Ozan Safi <ozan@oscorp.se>
Add unsaved document counter

This is needed in cases where there are
multiple unsaved documents at the same time.

Signed-off-by: Ozan Safi <ozan@oscorp.se>
Merge branch 'master' of https://github.com/ozans/gedit-focus-autosave

Signed-off-by: Ozan Safi <ozan@oscorp.se>

Conflicts:
	focus_autosave.py