Fixed - Add to/create tour

Don't know how many of you tried it, but It was almost impossible to create custom picture tours for many years. This has now been completely reworked so it not only works much better on PC, but mobile and tablets too.

There are many more fixes and improvements to come, but please help out if you can by making a donation, no matter how small, as it all helps with keeping the site going and helping us to improve it. Thank you.