owncloud: Do Apache reload instead of restart
Created by: SunilMohanAdapa
Restarting Apache breaks existing connections. This includes the connection on which the Plinth's user has made the ownCloud enable/disable request. This leads to an almost certain 'Connection Interupted' message to the client when changes to ownCloud are submitted.
On the other hand, 'reload' is sufficient and 'restart' is not required. It is also faster and recommended by 'a2enconf' and 'a2disconf' commands.