Add first release medatada and move scripts

* Move developer-tools-center to __init__.py to then generate the script
* Add a helper to run from master
* Add setup.py to deploy the tools. Ship only files we want to ship.
  However, the work isn't fully done yet:
  - data_dir seems to not be shipped in the correct directory in
    setup.py install (without --root)
  - Run whole test suite, we maybe want to run only small tests
  - gather correct requirements as per target, the install_requires doesn't
    seem to have any effect though
  -  add babel for handling i18n and l10n, not bound to the release process yet
* Some initial function to get the data directory. Need to fetch version and
  change destination when installing though.
Fix some python warnings on deprecations
Modify README to run tests with warnings and i18n
First .pot generation