Merge pull request #67 from jsilvestre/master

Various fixes
Merge pull request #68 from jsilvestre/master

Changed: drop zone is now the whole file list
do not crash the app if file.path is undefined
update source map
merge + fix the fact that folders were not clickable anymore
Fixed: folders and files couldn't be clicked anymore
Changed: discard renaming with 'esc' key. Close #35.
Added: on edit, only the part before the file extension is selected
Built