Send away visitors.

[Zegnat]

All current (2015-11-04) other server implementations will redirect visitors to the PhotoBackup homepage (https://photobackup.github.io/). Add this for the PHP server implementation as well.

Although I would like to make this configurable. Maybe a setting called VisitorRedirect?

[stephanepechard]

I tend to only add the minimum required configuration parameters, and add one for this is maybe not desirable. At least, it should not be required. I should probably document the configuration file properties too...

Plus, I have another idea in mind for the GET on /. I want to write a small interface to watch and eventually delete pictures that are on the server. Something like a very thin dashboard. Just need time to think about and hack it... Again, it should not be required.