Uploading .dotfiles (e.g. `.bashrc`) keeping both files results in broken filenames

[dragonchaser]

When uploading a .dotfile (e.g. .bashrc, via WEB-UI) a second time breaks the filename and prepends a counter to the filename.

Expected behaviour: To maintain the characteristics of a dotfile, in that cases the counter should be used as a suffix:

e.g. .filename -> .filename (1)