Restyling metadata.
Restyling metadata.

* Using short-description and long-description in debian/control file.
  <https://www.debian.org/doc/manuals/developers-reference/best-pkging-practices.html#bpp-pkg-synopsis>
* Providing a Vcs-Git section.

vodkina/GlobaLeaks,vodkina/GlobaLeaks,vodkina/GlobaLeaks,vodkina/GlobaLeaks