3.4.3

This release doesn't contain any relevant new features, just some nice bug fixes.

Bug fixes

[fe1d6f3] Fix some missing country flags (@tpatartmajeur)
[00929c2] Fix a minor design issue in autocomplete lists (@javiereguiluz)
[090b30e] Allow editing when the file no longer exists (@cristi-contiu)
[27d8c13] Fix design of global form errors (@javiereguiluz)
[569d5d6] Use Bootstrap alert dismissible button (@d3v4nt)
[b53a174] Fix action URL generation when entity DTO is missing (@dragosprotung)
[4764a6c] Prevent inaccessible template being displayed with virtual/manual fields (@pkly)
[c404e74] Prevent scroll to top when user click on a lightbox link (@GuillaumeRoques)
[5391339] Prevent a crash if the TextEditorType is used from a user's form (@pkly)
[8701fed] Update README file to mention the new EasyAdmin Demo (@cedricgeffroy)
[2b8bd67] Prevent batchDelete error when an entity is already deleted (@GuillaumeRoques)
[46301fd] Fix some form themes that use variables not available in older Symfony versions (@javiereguiluz)