Use "/usr/bin/env bash" instead of "/bin/bash" in Browser/execdesktop

Some Linux distributions (like mine) don't use the "standard/debian application paths". Normally "/usr/bin/env ${app}" does the trick on most obscure systems.

So changing the interpreter in Browser/execdesktop from "/bin/bash" to "/usr/bin/env bash" would be the solution.

Trac:
Username: readingflower