Create package for python scripts

[tupaschoal]

There are currently 3 python scripts for translation handling in this repository:

• language_clean_patch.py
• language_dump.py
• language_load.py

All of them relate to dumping or loading translations from and to objects, and thus have some common code, such as the supported languages.

Ideally they should be packaged together, so we can extract bits of code to reuse in all of them and also so that their coupling can be evident