🚨(frontend) block button when creating doc

When the user clicks on the button to create a new doc,
the button is disabled to prevent multiple clicks.
Multiple clicks on the button could create multiple docs
and create a error about duplicated paths.

CHANGELOG.md

@@ -8,6 +8,10 @@ and this project adheres to
 
 ## [Unreleased]
 
+## Changed
+
+- 🚨(frontend) block button when creating doc #749
+
 ## Fixed
 
 - 🐛(back) validate document content in serializer #822