Remove generated file from repo

[endlessm/eos-shell#4043]
Merged translations from Ubuntu

From xdg-user-dirs_0.15-2ubuntu2: launchpad_translation_export.patch.

Includes Arabic translation for "Downloads".

Left our Spanish translation for "Videos", and used the upstream
es.po file as es_ES.po in our branch.

Added "tg" to LINGUAS (was missing on Ubuntu, and breaks make dist).

[endlessm/eos-shell#4043]
Merge pull request #4 from endlessm/shell/4043

Shell/4043
Turn xdg-user-dir-lookup into xdg-user-dir

We build a C program that does the same of our shell script, just in a
worse and buggy way.
Install the C program instead of the script.

[endlessm/eos-shell#4048]
Update .gitignore

[endlessm/eos-shell#4048]