Initial import of security texts from https://docs.google.com/document/d/1ZrndvBj9eTg-ooIRfKbXxX18Ie-ODlcjnHjKXSY78Ew/edit?pli=1#
Rename to security Texts
Merge branch 'master' of github.com:globaleaks/GlobaLeaks

* 'master' of github.com:globaleaks/GlobaLeaks:
  Remove strict ubuntu checking part
  Make the installation script work also on debian