Merge branch 'development' into grunt-build
contribution guides for the project.

it is not a complete guide! It contains only the parts which I (@eabay) handled.
redirect to vagrant 1.0.x downloads. current definition is not compatible with the latest (1.1.5) version of vagrant.
grunt task to parse translation strings and create po template file. it supports only html files by now.
data-trans attributes inserted into tags in index.html and translatable strings extracted.
added data-trans attr to missing string
puppet module update
i18n implemented on UI (only for index.html).

* language switch menu added to sub nav.
* gettext library added to handle translations with po files.
* turkish translation.
Merge pull request #8 from Turkcell/grunt-build

Grunt build