Error on bad type

[hozfia]

i added simple function to check for bad type files and display message of the file(s) name witch are not supported.

the supported type are listed in array , i don't know if this proper way because it mean that you need to list all the types you are supporting , i listed a few of them witch ware listed in other parts of the code

here screenshot

[hozfia]

i added those changes : make ext_map global variable , then use popup instead of using browser alert
here screenshot