* [WiP] Improvements related to ASF release process

* Removing translation binaries (.mo)
* Working on 2 docker files to help package and validate releases
  * Dockerfile.from_tarball: takes a VERSION as input, downloads
    official source release fro svn and bakes it into a functional
    docker image that can be validated
  * Dockerfile.make_tarball: helps a maintainer to package and sign a
    release candidate or release

* Address COPYRIGHT + LICENSE issues

(cherry picked from commit 5ae2836b)

* Add Roboto font to LICENSE, remove glyphicons files

(cherry picked from commit 9615f39f7a556afe217b4e3288c9116f8ffaab91)

* remove unused LICENSE entries

* Change babytux to open image in birth dashboard

(cherry picked from commit 2776d11893596a029b8af37b96fd6ce1a9f12059)

* Improve instructions

* Docker tweaks

(cherry picked from commit df6e6462458ea8cff1482c142921b20f5607ad8e)

* Include image