This allows the use of
$ su -c 'command'
to upgrade packages.

edge of the indicator

* gnome-software
* Update-manager (Ubuntu only)
* Or a custom command

* This command can be executed without a password if the user is an admin.
* Remove unnecessary policy and updater files
* Remove install-policy from Makefile

* gnome-terminal sends the an exit code as soon as it opens, making the
indicator believe that the update process already finished.
* xterm actually waits for the process to finish to redirect the proper
exit code.

Also remove useless key in the schema.

* Store the last date as a double
* Use this to check for elapsed time

The terminal window can be specified in an entry field.

- Add policykit for /usr/local/bin/updater
- Add a script and an installation procedure

* Also, update all po files (with fuzzy)

* Dates arrays: fix declaration with translation
* Makefile: fix for translation files