BUG - Control that the url is not already used when creating a new blog post

[robiso]

Hello,

Using a blog, I happened to had two articles with the same title. And when I wrote the second article, it overwrote the first one. At first I didn't understand why till I figured out that creating a new article with the same title it was using the same URL and thus overwritting the previous article with this URL.

It would be nice that when one wants to create a new article and write the title, WonderCMS check first if this URL is not in use and if it does either (I offer two ideas because one might be easier to code) :

warn the user to let the user choose an other Title and forbid validation until the user choose an other title
add a number (ordered list) to the title automatically

[robiso]

Fixed locally, update will be published once we publish WonderCMS 3.5.0 in the upcoming days.

[robiso]

Opened PR.