Fix compile after 40713c1548e5e4688a38c86ac950e769f2136c7f
We no longer catch any exception and then ignore it afterwards while merging; we'll start handling them one by one. Fixes an issue where folder to which we didn't have access would result into no merging happening at all.
Show the 'New folder' button when searching for a directory and set the root directory to My Computer
Fix an issue where an incorrect amount of output files would be created because of one extension being used in more ways because their case sensitivity
The directory output textbox (non-file) is now auto-complete as well
Fix a newly introduced issue where a file would be in use until the application was closed after the initial directory output could be granted access to